Home / 8,853.35-12,218.81-5,718.65

Finding the Fourth Proportional to 8,853.35, 12,218.81 and 5,718.65

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Solution

The fourth proportional to 8,853.35, 12,218.81 and 5,718.65 is: 7,892.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,853.35 : 12,218.81 = 5,718.65 : x
  2. Step 2: Convert to fraction form
    8,853.35/12,218.81 = 5,718.65/x
  3. Step 3: Cross multiply
    8,853.35x = 12,218.81 × 5,718.65
  4. Step 4: Simplify right side
    8,853.35x = 69,875,008.12
  5. Step 5: Solve for x
    x = 69,875,008.12/8,853.35
  6. Step 6: Final answer
    x = 7,892.50

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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.