Home / 9,117.44-12,582.50-5,138.72

Finding the Fourth Proportional to 9,117.44, 12,582.50 and 5,138.72

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Solution

The fourth proportional to 9,117.44, 12,582.50 and 5,138.72 is: 7,091.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,117.44 : 12,582.50 = 5,138.72 : x
  2. Step 2: Convert to fraction form
    9,117.44/12,582.50 = 5,138.72/x
  3. Step 3: Cross multiply
    9,117.44x = 12,582.50 × 5,138.72
  4. Step 4: Simplify right side
    9,117.44x = 64,657,944.40
  5. Step 5: Solve for x
    x = 64,657,944.40/9,117.44
  6. Step 6: Final answer
    x = 7,091.68

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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.