Home / 4,785.28-7,171.44-2,478.40

Finding the Fourth Proportional to 4,785.28, 7,171.44 and 2,478.40

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Solution

The fourth proportional to 4,785.28, 7,171.44 and 2,478.40 is: 3,714.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,785.28 : 7,171.44 = 2,478.40 : x
  2. Step 2: Convert to fraction form
    4,785.28/7,171.44 = 2,478.40/x
  3. Step 3: Cross multiply
    4,785.28x = 7,171.44 × 2,478.40
  4. Step 4: Simplify right side
    4,785.28x = 17,773,696.90
  5. Step 5: Solve for x
    x = 17,773,696.90/4,785.28
  6. Step 6: Final answer
    x = 3,714.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.