Home / 8,140.40-12,210.52-6,178.08

Finding the Fourth Proportional to 8,140.40, 12,210.52 and 6,178.08

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Solution

The fourth proportional to 8,140.40, 12,210.52 and 6,178.08 is: 9,267.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.40 : 12,210.52 = 6,178.08 : x
  2. Step 2: Convert to fraction form
    8,140.40/12,210.52 = 6,178.08/x
  3. Step 3: Cross multiply
    8,140.40x = 12,210.52 × 6,178.08
  4. Step 4: Simplify right side
    8,140.40x = 75,437,569.40
  5. Step 5: Solve for x
    x = 75,437,569.40/8,140.40
  6. Step 6: Final answer
    x = 9,267.06

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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.