Home / 5,359.20-8,038.80-2,587.20

Finding the Fourth Proportional to 5,359.20, 8,038.80 and 2,587.20

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Solution

The fourth proportional to 5,359.20, 8,038.80 and 2,587.20 is: 3,880.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,359.20 : 8,038.80 = 2,587.20 : x
  2. Step 2: Convert to fraction form
    5,359.20/8,038.80 = 2,587.20/x
  3. Step 3: Cross multiply
    5,359.20x = 8,038.80 × 2,587.20
  4. Step 4: Simplify right side
    5,359.20x = 20,797,983.36
  5. Step 5: Solve for x
    x = 20,797,983.36/5,359.20
  6. Step 6: Final answer
    x = 3,880.80

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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.