Home / 9,370.24-12,931.20-5,178.88

Finding the Fourth Proportional to 9,370.24, 12,931.20 and 5,178.88

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Solution

The fourth proportional to 9,370.24, 12,931.20 and 5,178.88 is: 7,147.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,370.24 : 12,931.20 = 5,178.88 : x
  2. Step 2: Convert to fraction form
    9,370.24/12,931.20 = 5,178.88/x
  3. Step 3: Cross multiply
    9,370.24x = 12,931.20 × 5,178.88
  4. Step 4: Simplify right side
    9,370.24x = 66,969,133.06
  5. Step 5: Solve for x
    x = 66,969,133.06/9,370.24
  6. Step 6: Final answer
    x = 7,147.00

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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.