Home / 1,119.42-1,671.14-1,045.31

Finding the Fourth Proportional to 1,119.42, 1,671.14 and 1,045.31

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Solution

The fourth proportional to 1,119.42, 1,671.14 and 1,045.31 is: 1,560.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.42 : 1,671.14 = 1,045.31 : x
  2. Step 2: Convert to fraction form
    1,119.42/1,671.14 = 1,045.31/x
  3. Step 3: Cross multiply
    1,119.42x = 1,671.14 × 1,045.31
  4. Step 4: Simplify right side
    1,119.42x = 1,746,853.61
  5. Step 5: Solve for x
    x = 1,746,853.61/1,119.42
  6. Step 6: Final answer
    x = 1,560.50

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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.