Home / 9,370.50-12,931.33-5,178.75

Finding the Fourth Proportional to 9,370.50, 12,931.33 and 5,178.75

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Solution

The fourth proportional to 9,370.50, 12,931.33 and 5,178.75 is: 7,146.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,370.50 : 12,931.33 = 5,178.75 : x
  2. Step 2: Convert to fraction form
    9,370.50/12,931.33 = 5,178.75/x
  3. Step 3: Cross multiply
    9,370.50x = 12,931.33 × 5,178.75
  4. Step 4: Simplify right side
    9,370.50x = 66,968,125.24
  5. Step 5: Solve for x
    x = 66,968,125.24/9,370.50
  6. Step 6: Final answer
    x = 7,146.70

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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.