Home / 6,621.95-9,139.16-4,270.92

Finding the Fourth Proportional to 6,621.95, 9,139.16 and 4,270.92

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Solution

The fourth proportional to 6,621.95, 9,139.16 and 4,270.92 is: 5,894.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.95 : 9,139.16 = 4,270.92 : x
  2. Step 2: Convert to fraction form
    6,621.95/9,139.16 = 4,270.92/x
  3. Step 3: Cross multiply
    6,621.95x = 9,139.16 × 4,270.92
  4. Step 4: Simplify right side
    6,621.95x = 39,032,621.23
  5. Step 5: Solve for x
    x = 39,032,621.23/6,621.95
  6. Step 6: Final answer
    x = 5,894.43

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Half scale
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Double scale
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Similar ratio
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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.