Home / 1,292.52-1,927.70-1,098.76

Finding the Fourth Proportional to 1,292.52, 1,927.70 and 1,098.76

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Solution

The fourth proportional to 1,292.52, 1,927.70 and 1,098.76 is: 1,638.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.52 : 1,927.70 = 1,098.76 : x
  2. Step 2: Convert to fraction form
    1,292.52/1,927.70 = 1,098.76/x
  3. Step 3: Cross multiply
    1,292.52x = 1,927.70 × 1,098.76
  4. Step 4: Simplify right side
    1,292.52x = 2,118,079.65
  5. Step 5: Solve for x
    x = 2,118,079.65/1,292.52
  6. Step 6: Final answer
    x = 1,638.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.