Home / 6,979.27-9,621.43-4,989.10

Finding the Fourth Proportional to 6,979.27, 9,621.43 and 4,989.10

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Solution

The fourth proportional to 6,979.27, 9,621.43 and 4,989.10 is: 6,877.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.27 : 9,621.43 = 4,989.10 : x
  2. Step 2: Convert to fraction form
    6,979.27/9,621.43 = 4,989.10/x
  3. Step 3: Cross multiply
    6,979.27x = 9,621.43 × 4,989.10
  4. Step 4: Simplify right side
    6,979.27x = 48,002,276.41
  5. Step 5: Solve for x
    x = 48,002,276.41/6,979.27
  6. Step 6: Final answer
    x = 6,877.84

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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.