Home / 9,140.39-12,613.97-5,605.55

Finding the Fourth Proportional to 9,140.39, 12,613.97 and 5,605.55

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Solution

The fourth proportional to 9,140.39, 12,613.97 and 5,605.55 is: 7,735.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.39 : 12,613.97 = 5,605.55 : x
  2. Step 2: Convert to fraction form
    9,140.39/12,613.97 = 5,605.55/x
  3. Step 3: Cross multiply
    9,140.39x = 12,613.97 × 5,605.55
  4. Step 4: Simplify right side
    9,140.39x = 70,708,206.25
  5. Step 5: Solve for x
    x = 70,708,206.25/9,140.39
  6. Step 6: Final answer
    x = 7,735.80

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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.