Home / 7,113.31-9,821-6,365.99

Finding the Fourth Proportional to 7,113.31, 9,821 and 6,365.99

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Solution

The fourth proportional to 7,113.31, 9,821 and 6,365.99 is: 8,789.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.31 : 9,821 = 6,365.99 : x
  2. Step 2: Convert to fraction form
    7,113.31/9,821 = 6,365.99/x
  3. Step 3: Cross multiply
    7,113.31x = 9,821 × 6,365.99
  4. Step 4: Simplify right side
    7,113.31x = 62,520,387.79
  5. Step 5: Solve for x
    x = 62,520,387.79/7,113.31
  6. Step 6: Final answer
    x = 8,789.21

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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.