Home / 5,726.40-8,589.60-4,430.40

Finding the Fourth Proportional to 5,726.40, 8,589.60 and 4,430.40

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Solution

The fourth proportional to 5,726.40, 8,589.60 and 4,430.40 is: 6,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,726.40 : 8,589.60 = 4,430.40 : x
  2. Step 2: Convert to fraction form
    5,726.40/8,589.60 = 4,430.40/x
  3. Step 3: Cross multiply
    5,726.40x = 8,589.60 × 4,430.40
  4. Step 4: Simplify right side
    5,726.40x = 38,055,363.84
  5. Step 5: Solve for x
    x = 38,055,363.84/5,726.40
  6. Step 6: Final answer
    x = 6,645.60

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Half scale
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Similar ratio
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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.