Home / 1,438.74-2,153.92-1,070.18

Finding the Fourth Proportional to 1,438.74, 2,153.92 and 1,070.18

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Solution

The fourth proportional to 1,438.74, 2,153.92 and 1,070.18 is: 1,602.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.74 : 2,153.92 = 1,070.18 : x
  2. Step 2: Convert to fraction form
    1,438.74/2,153.92 = 1,070.18/x
  3. Step 3: Cross multiply
    1,438.74x = 2,153.92 × 1,070.18
  4. Step 4: Simplify right side
    1,438.74x = 2,305,082.11
  5. Step 5: Solve for x
    x = 2,305,082.11/1,438.74
  6. Step 6: Final answer
    x = 1,602.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.