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Finding the Fourth Proportional to 1,127.84, 1,557.96 and 882.26

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Solution

The fourth proportional to 1,127.84, 1,557.96 and 882.26 is: 1,218.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.84 : 1,557.96 = 882.26 : x
  2. Step 2: Convert to fraction form
    1,127.84/1,557.96 = 882.26/x
  3. Step 3: Cross multiply
    1,127.84x = 1,557.96 × 882.26
  4. Step 4: Simplify right side
    1,127.84x = 1,374,525.79
  5. Step 5: Solve for x
    x = 1,374,525.79/1,127.84
  6. Step 6: Final answer
    x = 1,218.72

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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.