Home / 4,187.28-6,280.92-1,590.21

Finding the Fourth Proportional to 4,187.28, 6,280.92 and 1,590.21

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Solution

The fourth proportional to 4,187.28, 6,280.92 and 1,590.21 is: 2,385.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,187.28 : 6,280.92 = 1,590.21 : x
  2. Step 2: Convert to fraction form
    4,187.28/6,280.92 = 1,590.21/x
  3. Step 3: Cross multiply
    4,187.28x = 6,280.92 × 1,590.21
  4. Step 4: Simplify right side
    4,187.28x = 9,987,981.79
  5. Step 5: Solve for x
    x = 9,987,981.79/4,187.28
  6. Step 6: Final answer
    x = 2,385.32

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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.