Home / 7,931.72-10,945.40-4,394.90

Finding the Fourth Proportional to 7,931.72, 10,945.40 and 4,394.90

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Solution

The fourth proportional to 7,931.72, 10,945.40 and 4,394.90 is: 6,064.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.72 : 10,945.40 = 4,394.90 : x
  2. Step 2: Convert to fraction form
    7,931.72/10,945.40 = 4,394.90/x
  3. Step 3: Cross multiply
    7,931.72x = 10,945.40 × 4,394.90
  4. Step 4: Simplify right side
    7,931.72x = 48,103,938.46
  5. Step 5: Solve for x
    x = 48,103,938.46/7,931.72
  6. Step 6: Final answer
    x = 6,064.75

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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.