Home / 5,307.20-7,323.92-3,210.72

Finding the Fourth Proportional to 5,307.20, 7,323.92 and 3,210.72

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Solution

The fourth proportional to 5,307.20, 7,323.92 and 3,210.72 is: 4,430.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,307.20 : 7,323.92 = 3,210.72 : x
  2. Step 2: Convert to fraction form
    5,307.20/7,323.92 = 3,210.72/x
  3. Step 3: Cross multiply
    5,307.20x = 7,323.92 × 3,210.72
  4. Step 4: Simplify right side
    5,307.20x = 23,515,056.42
  5. Step 5: Solve for x
    x = 23,515,056.42/5,307.20
  6. Step 6: Final answer
    x = 4,430.78

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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.