Home / 9,877.38-13,631.70-5,629.74

Finding the Fourth Proportional to 9,877.38, 13,631.70 and 5,629.74

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Solution

The fourth proportional to 9,877.38, 13,631.70 and 5,629.74 is: 7,769.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,877.38 : 13,631.70 = 5,629.74 : x
  2. Step 2: Convert to fraction form
    9,877.38/13,631.70 = 5,629.74/x
  3. Step 3: Cross multiply
    9,877.38x = 13,631.70 × 5,629.74
  4. Step 4: Simplify right side
    9,877.38x = 76,742,926.76
  5. Step 5: Solve for x
    x = 76,742,926.76/9,877.38
  6. Step 6: Final answer
    x = 7,769.56

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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.