Home / 1,397.86-1,927.02-1,102.60

Finding the Fourth Proportional to 1,397.86, 1,927.02 and 1,102.60

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Solution

The fourth proportional to 1,397.86, 1,927.02 and 1,102.60 is: 1,519.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397.86 : 1,927.02 = 1,102.60 : x
  2. Step 2: Convert to fraction form
    1,397.86/1,927.02 = 1,102.60/x
  3. Step 3: Cross multiply
    1,397.86x = 1,927.02 × 1,102.60
  4. Step 4: Simplify right side
    1,397.86x = 2,124,732.25
  5. Step 5: Solve for x
    x = 2,124,732.25/1,397.86
  6. Step 6: Final answer
    x = 1,519.99

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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.