Home / 1,438.04-2,156.88-572.96

Finding the Fourth Proportional to 1,438.04, 2,156.88 and 572.96

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Solution

The fourth proportional to 1,438.04, 2,156.88 and 572.96 is: 859.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.04 : 2,156.88 = 572.96 : x
  2. Step 2: Convert to fraction form
    1,438.04/2,156.88 = 572.96/x
  3. Step 3: Cross multiply
    1,438.04x = 2,156.88 × 572.96
  4. Step 4: Simplify right side
    1,438.04x = 1,235,805.96
  5. Step 5: Solve for x
    x = 1,235,805.96/1,438.04
  6. Step 6: Final answer
    x = 859.37

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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.