Home / 5,121.64-7,066.50-4,328.20

Finding the Fourth Proportional to 5,121.64, 7,066.50 and 4,328.20

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Solution

The fourth proportional to 5,121.64, 7,066.50 and 4,328.20 is: 5,971.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.64 : 7,066.50 = 4,328.20 : x
  2. Step 2: Convert to fraction form
    5,121.64/7,066.50 = 4,328.20/x
  3. Step 3: Cross multiply
    5,121.64x = 7,066.50 × 4,328.20
  4. Step 4: Simplify right side
    5,121.64x = 30,585,225.30
  5. Step 5: Solve for x
    x = 30,585,225.30/5,121.64
  6. Step 6: Final answer
    x = 5,971.76

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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.