Home / 6,225.81-8,585.02-3,987.78

Finding the Fourth Proportional to 6,225.81, 8,585.02 and 3,987.78

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Solution

The fourth proportional to 6,225.81, 8,585.02 and 3,987.78 is: 5,498.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,225.81 : 8,585.02 = 3,987.78 : x
  2. Step 2: Convert to fraction form
    6,225.81/8,585.02 = 3,987.78/x
  3. Step 3: Cross multiply
    6,225.81x = 8,585.02 × 3,987.78
  4. Step 4: Simplify right side
    6,225.81x = 34,235,171.06
  5. Step 5: Solve for x
    x = 34,235,171.06/6,225.81
  6. Step 6: Final answer
    x = 5,498.91

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.