Home / 5,148.38-7,722.63-1,685.63

Finding the Fourth Proportional to 5,148.38, 7,722.63 and 1,685.63

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Solution

The fourth proportional to 5,148.38, 7,722.63 and 1,685.63 is: 2,528.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.38 : 7,722.63 = 1,685.63 : x
  2. Step 2: Convert to fraction form
    5,148.38/7,722.63 = 1,685.63/x
  3. Step 3: Cross multiply
    5,148.38x = 7,722.63 × 1,685.63
  4. Step 4: Simplify right side
    5,148.38x = 13,017,458.19
  5. Step 5: Solve for x
    x = 13,017,458.19/5,148.38
  6. Step 6: Final answer
    x = 2,528.46

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.