Home / 9,947.80-14,921.70-5,261.40

Finding the Fourth Proportional to 9,947.80, 14,921.70 and 5,261.40

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Solution

The fourth proportional to 9,947.80, 14,921.70 and 5,261.40 is: 7,892.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,947.80 : 14,921.70 = 5,261.40 : x
  2. Step 2: Convert to fraction form
    9,947.80/14,921.70 = 5,261.40/x
  3. Step 3: Cross multiply
    9,947.80x = 14,921.70 × 5,261.40
  4. Step 4: Simplify right side
    9,947.80x = 78,509,032.38
  5. Step 5: Solve for x
    x = 78,509,032.38/9,947.80
  6. Step 6: Final answer
    x = 7,892.10

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1.5x scale

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.