Home / 9,111.80-13,663.86-2,870.15

Finding the Fourth Proportional to 9,111.80, 13,663.86 and 2,870.15

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Solution

The fourth proportional to 9,111.80, 13,663.86 and 2,870.15 is: 4,304.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111.80 : 13,663.86 = 2,870.15 : x
  2. Step 2: Convert to fraction form
    9,111.80/13,663.86 = 2,870.15/x
  3. Step 3: Cross multiply
    9,111.80x = 13,663.86 × 2,870.15
  4. Step 4: Simplify right side
    9,111.80x = 39,217,248.70
  5. Step 5: Solve for x
    x = 39,217,248.70/9,111.80
  6. Step 6: Final answer
    x = 4,304.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.