Home / 9,140.40-12,613.59-5,161.23

Finding the Fourth Proportional to 9,140.40, 12,613.59 and 5,161.23

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Solution

The fourth proportional to 9,140.40, 12,613.59 and 5,161.23 is: 7,122.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.40 : 12,613.59 = 5,161.23 : x
  2. Step 2: Convert to fraction form
    9,140.40/12,613.59 = 5,161.23/x
  3. Step 3: Cross multiply
    9,140.40x = 12,613.59 × 5,161.23
  4. Step 4: Simplify right side
    9,140.40x = 65,101,639.12
  5. Step 5: Solve for x
    x = 65,101,639.12/9,140.40
  6. Step 6: Final answer
    x = 7,122.41

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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.