Home / 1,177.89-1,628.54-1,126.25

Finding the Fourth Proportional to 1,177.89, 1,628.54 and 1,126.25

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Solution

The fourth proportional to 1,177.89, 1,628.54 and 1,126.25 is: 1,557.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.89 : 1,628.54 = 1,126.25 : x
  2. Step 2: Convert to fraction form
    1,177.89/1,628.54 = 1,126.25/x
  3. Step 3: Cross multiply
    1,177.89x = 1,628.54 × 1,126.25
  4. Step 4: Simplify right side
    1,177.89x = 1,834,129.40
  5. Step 5: Solve for x
    x = 1,834,129.40/1,177.89
  6. Step 6: Final answer
    x = 1,557.13

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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.