Home / 9,135.93-12,605.45-5,358.90

Finding the Fourth Proportional to 9,135.93, 12,605.45 and 5,358.90

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Solution

The fourth proportional to 9,135.93, 12,605.45 and 5,358.90 is: 7,394.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.93 : 12,605.45 = 5,358.90 : x
  2. Step 2: Convert to fraction form
    9,135.93/12,605.45 = 5,358.90/x
  3. Step 3: Cross multiply
    9,135.93x = 12,605.45 × 5,358.90
  4. Step 4: Simplify right side
    9,135.93x = 67,551,319.21
  5. Step 5: Solve for x
    x = 67,551,319.21/9,135.93
  6. Step 6: Final answer
    x = 7,394.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.