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Finding the Fourth Proportional to 1,127.64, 1,547.85 and 1,000.52

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Solution

The fourth proportional to 1,127.64, 1,547.85 and 1,000.52 is: 1,373.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.64 : 1,547.85 = 1,000.52 : x
  2. Step 2: Convert to fraction form
    1,127.64/1,547.85 = 1,000.52/x
  3. Step 3: Cross multiply
    1,127.64x = 1,547.85 × 1,000.52
  4. Step 4: Simplify right side
    1,127.64x = 1,548,647.14
  5. Step 5: Solve for x
    x = 1,548,647.14/1,127.64
  6. Step 6: Final answer
    x = 1,373.35

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.