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Finding the Fourth Proportional to 5,643.58, 8,480.40 and 5,288.89

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Solution

The fourth proportional to 5,643.58, 8,480.40 and 5,288.89 is: 7,947.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,643.58 : 8,480.40 = 5,288.89 : x
  2. Step 2: Convert to fraction form
    5,643.58/8,480.40 = 5,288.89/x
  3. Step 3: Cross multiply
    5,643.58x = 8,480.40 × 5,288.89
  4. Step 4: Simplify right side
    5,643.58x = 44,851,902.76
  5. Step 5: Solve for x
    x = 44,851,902.76/5,643.58
  6. Step 6: Final answer
    x = 7,947.42

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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.