Home / 7,877.21-10,870.29-4,340.39

Finding the Fourth Proportional to 7,877.21, 10,870.29 and 4,340.39

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Solution

The fourth proportional to 7,877.21, 10,870.29 and 4,340.39 is: 5,989.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877.21 : 10,870.29 = 4,340.39 : x
  2. Step 2: Convert to fraction form
    7,877.21/10,870.29 = 4,340.39/x
  3. Step 3: Cross multiply
    7,877.21x = 10,870.29 × 4,340.39
  4. Step 4: Simplify right side
    7,877.21x = 47,181,243.66
  5. Step 5: Solve for x
    x = 47,181,243.66/7,877.21
  6. Step 6: Final answer
    x = 5,989.59

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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.