Home / 10,660.98-15,989.04-2,870.40

Finding the Fourth Proportional to 10,660.98, 15,989.04 and 2,870.40

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Solution

The fourth proportional to 10,660.98, 15,989.04 and 2,870.40 is: 4,304.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.98 : 15,989.04 = 2,870.40 : x
  2. Step 2: Convert to fraction form
    10,660.98/15,989.04 = 2,870.40/x
  3. Step 3: Cross multiply
    10,660.98x = 15,989.04 × 2,870.40
  4. Step 4: Simplify right side
    10,660.98x = 45,894,940.42
  5. Step 5: Solve for x
    x = 45,894,940.42/10,660.98
  6. Step 6: Final answer
    x = 4,304.95

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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.