Home / 3,487.02-4,812.06-1,915.20

Finding the Fourth Proportional to 3,487.02, 4,812.06 and 1,915.20

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Solution

The fourth proportional to 3,487.02, 4,812.06 and 1,915.20 is: 2,642.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.02 : 4,812.06 = 1,915.20 : x
  2. Step 2: Convert to fraction form
    3,487.02/4,812.06 = 1,915.20/x
  3. Step 3: Cross multiply
    3,487.02x = 4,812.06 × 1,915.20
  4. Step 4: Simplify right side
    3,487.02x = 9,216,057.31
  5. Step 5: Solve for x
    x = 9,216,057.31/3,487.02
  6. Step 6: Final answer
    x = 2,642.96

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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.