Home / 7,877.72-10,871.31-4,340.99

Finding the Fourth Proportional to 7,877.72, 10,871.31 and 4,340.99

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Solution

The fourth proportional to 7,877.72, 10,871.31 and 4,340.99 is: 5,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877.72 : 10,871.31 = 4,340.99 : x
  2. Step 2: Convert to fraction form
    7,877.72/10,871.31 = 4,340.99/x
  3. Step 3: Cross multiply
    7,877.72x = 10,871.31 × 4,340.99
  4. Step 4: Simplify right side
    7,877.72x = 47,192,291.45
  5. Step 5: Solve for x
    x = 47,192,291.45/7,877.72
  6. Step 6: Final answer
    x = 5,990.60

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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.