Home / 9,128.32-12,590.48-8,823.36

Finding the Fourth Proportional to 9,128.32, 12,590.48 and 8,823.36

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Solution

The fourth proportional to 9,128.32, 12,590.48 and 8,823.36 is: 12,169.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.32 : 12,590.48 = 8,823.36 : x
  2. Step 2: Convert to fraction form
    9,128.32/12,590.48 = 8,823.36/x
  3. Step 3: Cross multiply
    9,128.32x = 12,590.48 × 8,823.36
  4. Step 4: Simplify right side
    9,128.32x = 111,090,337.61
  5. Step 5: Solve for x
    x = 111,090,337.61/9,128.32
  6. Step 6: Final answer
    x = 12,169.86

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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.