Home / 3,487.10-4,812.26-1,915.20

Finding the Fourth Proportional to 3,487.10, 4,812.26 and 1,915.20

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Solution

The fourth proportional to 3,487.10, 4,812.26 and 1,915.20 is: 2,643.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.10 : 4,812.26 = 1,915.20 : x
  2. Step 2: Convert to fraction form
    3,487.10/4,812.26 = 1,915.20/x
  3. Step 3: Cross multiply
    3,487.10x = 4,812.26 × 1,915.20
  4. Step 4: Simplify right side
    3,487.10x = 9,216,430.78
  5. Step 5: Solve for x
    x = 9,216,430.78/3,487.10
  6. Step 6: Final answer
    x = 2,643.01

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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.