Home / 8,771.29-12,117.20-7,590.31

Finding the Fourth Proportional to 8,771.29, 12,117.20 and 7,590.31

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Solution

The fourth proportional to 8,771.29, 12,117.20 and 7,590.31 is: 10,485.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.29 : 12,117.20 = 7,590.31 : x
  2. Step 2: Convert to fraction form
    8,771.29/12,117.20 = 7,590.31/x
  3. Step 3: Cross multiply
    8,771.29x = 12,117.20 × 7,590.31
  4. Step 4: Simplify right side
    8,771.29x = 91,973,236.09
  5. Step 5: Solve for x
    x = 91,973,236.09/8,771.29
  6. Step 6: Final answer
    x = 10,485.72

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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.