Home / 7,149.47-10,702.55-6,491.34

Finding the Fourth Proportional to 7,149.47, 10,702.55 and 6,491.34

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Solution

The fourth proportional to 7,149.47, 10,702.55 and 6,491.34 is: 9,717.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.47 : 10,702.55 = 6,491.34 : x
  2. Step 2: Convert to fraction form
    7,149.47/10,702.55 = 6,491.34/x
  3. Step 3: Cross multiply
    7,149.47x = 10,702.55 × 6,491.34
  4. Step 4: Simplify right side
    7,149.47x = 69,473,907.15
  5. Step 5: Solve for x
    x = 69,473,907.15/7,149.47
  6. Step 6: Final answer
    x = 9,717.36

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1.5x scale

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.