Home / 5,613.28-8,420.10-1,915.36

Finding the Fourth Proportional to 5,613.28, 8,420.10 and 1,915.36

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Solution

The fourth proportional to 5,613.28, 8,420.10 and 1,915.36 is: 2,873.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,613.28 : 8,420.10 = 1,915.36 : x
  2. Step 2: Convert to fraction form
    5,613.28/8,420.10 = 1,915.36/x
  3. Step 3: Cross multiply
    5,613.28x = 8,420.10 × 1,915.36
  4. Step 4: Simplify right side
    5,613.28x = 16,127,522.74
  5. Step 5: Solve for x
    x = 16,127,522.74/5,613.28
  6. Step 6: Final answer
    x = 2,873.10

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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.