Home / 9,115.08-12,565.98-6,879.48

Finding the Fourth Proportional to 9,115.08, 12,565.98 and 6,879.48

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Solution

The fourth proportional to 9,115.08, 12,565.98 and 6,879.48 is: 9,484.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.08 : 12,565.98 = 6,879.48 : x
  2. Step 2: Convert to fraction form
    9,115.08/12,565.98 = 6,879.48/x
  3. Step 3: Cross multiply
    9,115.08x = 12,565.98 × 6,879.48
  4. Step 4: Simplify right side
    9,115.08x = 86,447,408.09
  5. Step 5: Solve for x
    x = 86,447,408.09/9,115.08
  6. Step 6: Final answer
    x = 9,484.00

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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.