Home / 5,115.19-7,626.74-4,987.63

Finding the Fourth Proportional to 5,115.19, 7,626.74 and 4,987.63

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Solution

The fourth proportional to 5,115.19, 7,626.74 and 4,987.63 is: 7,436.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.19 : 7,626.74 = 4,987.63 : x
  2. Step 2: Convert to fraction form
    5,115.19/7,626.74 = 4,987.63/x
  3. Step 3: Cross multiply
    5,115.19x = 7,626.74 × 4,987.63
  4. Step 4: Simplify right side
    5,115.19x = 38,039,357.23
  5. Step 5: Solve for x
    x = 38,039,357.23/5,115.19
  6. Step 6: Final answer
    x = 7,436.55

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Half scale
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Double scale
Find fourth proportional to 5,116.19, 7,628.23 and 4,988.63
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.