Home / 5,678.04-8,519.40-2,557.20

Finding the Fourth Proportional to 5,678.04, 8,519.40 and 2,557.20

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Solution

The fourth proportional to 5,678.04, 8,519.40 and 2,557.20 is: 3,836.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.04 : 8,519.40 = 2,557.20 : x
  2. Step 2: Convert to fraction form
    5,678.04/8,519.40 = 2,557.20/x
  3. Step 3: Cross multiply
    5,678.04x = 8,519.40 × 2,557.20
  4. Step 4: Simplify right side
    5,678.04x = 21,785,809.68
  5. Step 5: Solve for x
    x = 21,785,809.68/5,678.04
  6. Step 6: Final answer
    x = 3,836.85

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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.