Home / 4,877.89-6,728.59-2,990.32

Finding the Fourth Proportional to 4,877.89, 6,728.59 and 2,990.32

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Solution

The fourth proportional to 4,877.89, 6,728.59 and 2,990.32 is: 4,124.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,877.89 : 6,728.59 = 2,990.32 : x
  2. Step 2: Convert to fraction form
    4,877.89/6,728.59 = 2,990.32/x
  3. Step 3: Cross multiply
    4,877.89x = 6,728.59 × 2,990.32
  4. Step 4: Simplify right side
    4,877.89x = 20,120,637.25
  5. Step 5: Solve for x
    x = 20,120,637.25/4,877.89
  6. Step 6: Final answer
    x = 4,124.86

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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.