Home / 8,565.12-11,818.08-5,420.16

Finding the Fourth Proportional to 8,565.12, 11,818.08 and 5,420.16

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Solution

The fourth proportional to 8,565.12, 11,818.08 and 5,420.16 is: 7,478.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,565.12 : 11,818.08 = 5,420.16 : x
  2. Step 2: Convert to fraction form
    8,565.12/11,818.08 = 5,420.16/x
  3. Step 3: Cross multiply
    8,565.12x = 11,818.08 × 5,420.16
  4. Step 4: Simplify right side
    8,565.12x = 64,055,884.49
  5. Step 5: Solve for x
    x = 64,055,884.49/8,565.12
  6. Step 6: Final answer
    x = 7,478.69

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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.