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Finding the Fourth Proportional to 8,646.80, 11,932.02 and 4,870.58

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Solution

The fourth proportional to 8,646.80, 11,932.02 and 4,870.58 is: 6,721.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,646.80 : 11,932.02 = 4,870.58 : x
  2. Step 2: Convert to fraction form
    8,646.80/11,932.02 = 4,870.58/x
  3. Step 3: Cross multiply
    8,646.80x = 11,932.02 × 4,870.58
  4. Step 4: Simplify right side
    8,646.80x = 58,115,798.31
  5. Step 5: Solve for x
    x = 58,115,798.31/8,646.80
  6. Step 6: Final answer
    x = 6,721.08

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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.