Home / 1,658.80-2,288.28-1,127.44

Finding the Fourth Proportional to 1,658.80, 2,288.28 and 1,127.44

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Solution

The fourth proportional to 1,658.80, 2,288.28 and 1,127.44 is: 1,555.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,658.80 : 2,288.28 = 1,127.44 : x
  2. Step 2: Convert to fraction form
    1,658.80/2,288.28 = 1,127.44/x
  3. Step 3: Cross multiply
    1,658.80x = 2,288.28 × 1,127.44
  4. Step 4: Simplify right side
    1,658.80x = 2,579,898.40
  5. Step 5: Solve for x
    x = 2,579,898.40/1,658.80
  6. Step 6: Final answer
    x = 1,555.28

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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.