Home / 9,877.19-13,631.81-5,629.80

Finding the Fourth Proportional to 9,877.19, 13,631.81 and 5,629.80

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Solution

The fourth proportional to 9,877.19, 13,631.81 and 5,629.80 is: 7,769.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,877.19 : 13,631.81 = 5,629.80 : x
  2. Step 2: Convert to fraction form
    9,877.19/13,631.81 = 5,629.80/x
  3. Step 3: Cross multiply
    9,877.19x = 13,631.81 × 5,629.80
  4. Step 4: Simplify right side
    9,877.19x = 76,744,335.79
  5. Step 5: Solve for x
    x = 76,744,335.79/9,877.19
  6. Step 6: Final answer
    x = 7,769.85

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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.