Home / 3,487.22-4,812.32-1,915.36

Finding the Fourth Proportional to 3,487.22, 4,812.32 and 1,915.36

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Solution

The fourth proportional to 3,487.22, 4,812.32 and 1,915.36 is: 2,643.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.22 : 4,812.32 = 1,915.36 : x
  2. Step 2: Convert to fraction form
    3,487.22/4,812.32 = 1,915.36/x
  3. Step 3: Cross multiply
    3,487.22x = 4,812.32 × 1,915.36
  4. Step 4: Simplify right side
    3,487.22x = 9,217,325.24
  5. Step 5: Solve for x
    x = 9,217,325.24/3,487.22
  6. Step 6: Final answer
    x = 2,643.17

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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.