Home / 9,135.29-12,605.34-5,357.03

Finding the Fourth Proportional to 9,135.29, 12,605.34 and 5,357.03

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Solution

The fourth proportional to 9,135.29, 12,605.34 and 5,357.03 is: 7,391.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.29 : 12,605.34 = 5,357.03 : x
  2. Step 2: Convert to fraction form
    9,135.29/12,605.34 = 5,357.03/x
  3. Step 3: Cross multiply
    9,135.29x = 12,605.34 × 5,357.03
  4. Step 4: Simplify right side
    9,135.29x = 67,527,121.51
  5. Step 5: Solve for x
    x = 67,527,121.51/9,135.29
  6. Step 6: Final answer
    x = 7,391.90

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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.