Home / 3,487.47-4,812.69-1,915.53

Finding the Fourth Proportional to 3,487.47, 4,812.69 and 1,915.53

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Solution

The fourth proportional to 3,487.47, 4,812.69 and 1,915.53 is: 2,643.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.47 : 4,812.69 = 1,915.53 : x
  2. Step 2: Convert to fraction form
    3,487.47/4,812.69 = 1,915.53/x
  3. Step 3: Cross multiply
    3,487.47x = 4,812.69 × 1,915.53
  4. Step 4: Simplify right side
    3,487.47x = 9,218,852.08
  5. Step 5: Solve for x
    x = 9,218,852.08/3,487.47
  6. Step 6: Final answer
    x = 2,643.42

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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.