Home / 7,939.60-10,931.65-6,742.22

Finding the Fourth Proportional to 7,939.60, 10,931.65 and 6,742.22

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Solution

The fourth proportional to 7,939.60, 10,931.65 and 6,742.22 is: 9,283.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.60 : 10,931.65 = 6,742.22 : x
  2. Step 2: Convert to fraction form
    7,939.60/10,931.65 = 6,742.22/x
  3. Step 3: Cross multiply
    7,939.60x = 10,931.65 × 6,742.22
  4. Step 4: Simplify right side
    7,939.60x = 73,703,517.75
  5. Step 5: Solve for x
    x = 73,703,517.75/7,939.60
  6. Step 6: Final answer
    x = 9,283.03

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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.