Home / 1,915.02-2,872.67-616.55

Finding the Fourth Proportional to 1,915.02, 2,872.67 and 616.55

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Solution

The fourth proportional to 1,915.02, 2,872.67 and 616.55 is: 924.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.02 : 2,872.67 = 616.55 : x
  2. Step 2: Convert to fraction form
    1,915.02/2,872.67 = 616.55/x
  3. Step 3: Cross multiply
    1,915.02x = 2,872.67 × 616.55
  4. Step 4: Simplify right side
    1,915.02x = 1,771,127.24
  5. Step 5: Solve for x
    x = 1,771,127.24/1,915.02
  6. Step 6: Final answer
    x = 924.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.