Home / 1,045.17-1,441.13-782.73

Finding the Fourth Proportional to 1,045.17, 1,441.13 and 782.73

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Solution

The fourth proportional to 1,045.17, 1,441.13 and 782.73 is: 1,079.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.17 : 1,441.13 = 782.73 : x
  2. Step 2: Convert to fraction form
    1,045.17/1,441.13 = 782.73/x
  3. Step 3: Cross multiply
    1,045.17x = 1,441.13 × 782.73
  4. Step 4: Simplify right side
    1,045.17x = 1,128,011.77
  5. Step 5: Solve for x
    x = 1,128,011.77/1,045.17
  6. Step 6: Final answer
    x = 1,079.26

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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.