Home / 6,780.18-9,356.70-4,127.10

Finding the Fourth Proportional to 6,780.18, 9,356.70 and 4,127.10

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Solution

The fourth proportional to 6,780.18, 9,356.70 and 4,127.10 is: 5,695.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,780.18 : 9,356.70 = 4,127.10 : x
  2. Step 2: Convert to fraction form
    6,780.18/9,356.70 = 4,127.10/x
  3. Step 3: Cross multiply
    6,780.18x = 9,356.70 × 4,127.10
  4. Step 4: Simplify right side
    6,780.18x = 38,616,036.57
  5. Step 5: Solve for x
    x = 38,616,036.57/6,780.18
  6. Step 6: Final answer
    x = 5,695.43

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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.