Home / 7,348.07-10,140.33-3,990.88

Finding the Fourth Proportional to 7,348.07, 10,140.33 and 3,990.88

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Solution

The fourth proportional to 7,348.07, 10,140.33 and 3,990.88 is: 5,507.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,348.07 : 10,140.33 = 3,990.88 : x
  2. Step 2: Convert to fraction form
    7,348.07/10,140.33 = 3,990.88/x
  3. Step 3: Cross multiply
    7,348.07x = 10,140.33 × 3,990.88
  4. Step 4: Simplify right side
    7,348.07x = 40,468,840.19
  5. Step 5: Solve for x
    x = 40,468,840.19/7,348.07
  6. Step 6: Final answer
    x = 5,507.41

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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.