Home / 4,700.10-6,471.36-3,990.47

Finding the Fourth Proportional to 4,700.10, 6,471.36 and 3,990.47

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Solution

The fourth proportional to 4,700.10, 6,471.36 and 3,990.47 is: 5,494.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,700.10 : 6,471.36 = 3,990.47 : x
  2. Step 2: Convert to fraction form
    4,700.10/6,471.36 = 3,990.47/x
  3. Step 3: Cross multiply
    4,700.10x = 6,471.36 × 3,990.47
  4. Step 4: Simplify right side
    4,700.10x = 25,823,735.58
  5. Step 5: Solve for x
    x = 25,823,735.58/4,700.10
  6. Step 6: Final answer
    x = 5,494.29

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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.