Home / 7,920.89-10,931.25-4,384.13

Finding the Fourth Proportional to 7,920.89, 10,931.25 and 4,384.13

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Solution

The fourth proportional to 7,920.89, 10,931.25 and 4,384.13 is: 6,050.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.89 : 10,931.25 = 4,384.13 : x
  2. Step 2: Convert to fraction form
    7,920.89/10,931.25 = 4,384.13/x
  3. Step 3: Cross multiply
    7,920.89x = 10,931.25 × 4,384.13
  4. Step 4: Simplify right side
    7,920.89x = 47,923,982.85
  5. Step 5: Solve for x
    x = 47,923,982.85/7,920.89
  6. Step 6: Final answer
    x = 6,050.33

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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.