Home / 6,979.02-9,621.09-4,988.85

Finding the Fourth Proportional to 6,979.02, 9,621.09 and 4,988.85

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Solution

The fourth proportional to 6,979.02, 9,621.09 and 4,988.85 is: 6,877.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.02 : 9,621.09 = 4,988.85 : x
  2. Step 2: Convert to fraction form
    6,979.02/9,621.09 = 4,988.85/x
  3. Step 3: Cross multiply
    6,979.02x = 9,621.09 × 4,988.85
  4. Step 4: Simplify right side
    6,979.02x = 47,998,174.85
  5. Step 5: Solve for x
    x = 47,998,174.85/6,979.02
  6. Step 6: Final answer
    x = 6,877.49

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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.