Home / 3,487.50-4,812.75-1,915.61

Finding the Fourth Proportional to 3,487.50, 4,812.75 and 1,915.61

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Solution

The fourth proportional to 3,487.50, 4,812.75 and 1,915.61 is: 2,643.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.50 : 4,812.75 = 1,915.61 : x
  2. Step 2: Convert to fraction form
    3,487.50/4,812.75 = 1,915.61/x
  3. Step 3: Cross multiply
    3,487.50x = 4,812.75 × 1,915.61
  4. Step 4: Simplify right side
    3,487.50x = 9,219,327.96
  5. Step 5: Solve for x
    x = 9,219,327.96/3,487.50
  6. Step 6: Final answer
    x = 2,643.53

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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.