Home / 5,619.90-7,752.60-3,853.20

Finding the Fourth Proportional to 5,619.90, 7,752.60 and 3,853.20

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Solution

The fourth proportional to 5,619.90, 7,752.60 and 3,853.20 is: 5,315.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.90 : 7,752.60 = 3,853.20 : x
  2. Step 2: Convert to fraction form
    5,619.90/7,752.60 = 3,853.20/x
  3. Step 3: Cross multiply
    5,619.90x = 7,752.60 × 3,853.20
  4. Step 4: Simplify right side
    5,619.90x = 29,872,318.32
  5. Step 5: Solve for x
    x = 29,872,318.32/5,619.90
  6. Step 6: Final answer
    x = 5,315.45

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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.