Home / 3,487.19-4,812.35-1,915.32

Finding the Fourth Proportional to 3,487.19, 4,812.35 and 1,915.32

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Solution

The fourth proportional to 3,487.19, 4,812.35 and 1,915.32 is: 2,643.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.19 : 4,812.35 = 1,915.32 : x
  2. Step 2: Convert to fraction form
    3,487.19/4,812.35 = 1,915.32/x
  3. Step 3: Cross multiply
    3,487.19x = 4,812.35 × 1,915.32
  4. Step 4: Simplify right side
    3,487.19x = 9,217,190.20
  5. Step 5: Solve for x
    x = 9,217,190.20/3,487.19
  6. Step 6: Final answer
    x = 2,643.16

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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.