Home / 7,877.47-10,870.77-4,340.65

Finding the Fourth Proportional to 7,877.47, 10,870.77 and 4,340.65

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Solution

The fourth proportional to 7,877.47, 10,870.77 and 4,340.65 is: 5,990.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877.47 : 10,870.77 = 4,340.65 : x
  2. Step 2: Convert to fraction form
    7,877.47/10,870.77 = 4,340.65/x
  3. Step 3: Cross multiply
    7,877.47x = 10,870.77 × 4,340.65
  4. Step 4: Simplify right side
    7,877.47x = 47,186,207.80
  5. Step 5: Solve for x
    x = 47,186,207.80/7,877.47
  6. Step 6: Final answer
    x = 5,990.02

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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.