Home / 3,865.02-5,336.10-2,979.12

Finding the Fourth Proportional to 3,865.02, 5,336.10 and 2,979.12

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Solution

The fourth proportional to 3,865.02, 5,336.10 and 2,979.12 is: 4,113.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.02 : 5,336.10 = 2,979.12 : x
  2. Step 2: Convert to fraction form
    3,865.02/5,336.10 = 2,979.12/x
  3. Step 3: Cross multiply
    3,865.02x = 5,336.10 × 2,979.12
  4. Step 4: Simplify right side
    3,865.02x = 15,896,882.23
  5. Step 5: Solve for x
    x = 15,896,882.23/3,865.02
  6. Step 6: Final answer
    x = 4,113.01

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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.