Home / 7,130.40-10,697.02-2,747.90

Finding the Fourth Proportional to 7,130.40, 10,697.02 and 2,747.90

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Solution

The fourth proportional to 7,130.40, 10,697.02 and 2,747.90 is: 4,122.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.40 : 10,697.02 = 2,747.90 : x
  2. Step 2: Convert to fraction form
    7,130.40/10,697.02 = 2,747.90/x
  3. Step 3: Cross multiply
    7,130.40x = 10,697.02 × 2,747.90
  4. Step 4: Simplify right side
    7,130.40x = 29,394,341.26
  5. Step 5: Solve for x
    x = 29,394,341.26/7,130.40
  6. Step 6: Final answer
    x = 4,122.40

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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.