Home / 7,302.20-10,077.03-3,990.20

Finding the Fourth Proportional to 7,302.20, 10,077.03 and 3,990.20

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Solution

The fourth proportional to 7,302.20, 10,077.03 and 3,990.20 is: 5,506.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,302.20 : 10,077.03 = 3,990.20 : x
  2. Step 2: Convert to fraction form
    7,302.20/10,077.03 = 3,990.20/x
  3. Step 3: Cross multiply
    7,302.20x = 10,077.03 × 3,990.20
  4. Step 4: Simplify right side
    7,302.20x = 40,209,314.72
  5. Step 5: Solve for x
    x = 40,209,314.72/7,302.20
  6. Step 6: Final answer
    x = 5,506.47

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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.