Home / 9,117.96-12,582.60-5,138.99

Finding the Fourth Proportional to 9,117.96, 12,582.60 and 5,138.99

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Solution

The fourth proportional to 9,117.96, 12,582.60 and 5,138.99 is: 7,091.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,117.96 : 12,582.60 = 5,138.99 : x
  2. Step 2: Convert to fraction form
    9,117.96/12,582.60 = 5,138.99/x
  3. Step 3: Cross multiply
    9,117.96x = 12,582.60 × 5,138.99
  4. Step 4: Simplify right side
    9,117.96x = 64,661,855.57
  5. Step 5: Solve for x
    x = 64,661,855.57/9,117.96
  6. Step 6: Final answer
    x = 7,091.70

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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.