Home / 3,487.25-4,812.35-1,915.31

Finding the Fourth Proportional to 3,487.25, 4,812.35 and 1,915.31

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Solution

The fourth proportional to 3,487.25, 4,812.35 and 1,915.31 is: 2,643.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.25 : 4,812.35 = 1,915.31 : x
  2. Step 2: Convert to fraction form
    3,487.25/4,812.35 = 1,915.31/x
  3. Step 3: Cross multiply
    3,487.25x = 4,812.35 × 1,915.31
  4. Step 4: Simplify right side
    3,487.25x = 9,217,144.53
  5. Step 5: Solve for x
    x = 9,217,144.53/3,487.25
  6. Step 6: Final answer
    x = 2,643.10

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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.