Home / 8,686.08-11,987.28-4,909.32

Finding the Fourth Proportional to 8,686.08, 11,987.28 and 4,909.32

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Solution

The fourth proportional to 8,686.08, 11,987.28 and 4,909.32 is: 6,775.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.08 : 11,987.28 = 4,909.32 : x
  2. Step 2: Convert to fraction form
    8,686.08/11,987.28 = 4,909.32/x
  3. Step 3: Cross multiply
    8,686.08x = 11,987.28 × 4,909.32
  4. Step 4: Simplify right side
    8,686.08x = 58,849,393.45
  5. Step 5: Solve for x
    x = 58,849,393.45/8,686.08
  6. Step 6: Final answer
    x = 6,775.14

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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.