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Finding the Fourth Proportional to 5,393.07, 7,440.98 and 3,155.50

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Solution

The fourth proportional to 5,393.07, 7,440.98 and 3,155.50 is: 4,353.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,393.07 : 7,440.98 = 3,155.50 : x
  2. Step 2: Convert to fraction form
    5,393.07/7,440.98 = 3,155.50/x
  3. Step 3: Cross multiply
    5,393.07x = 7,440.98 × 3,155.50
  4. Step 4: Simplify right side
    5,393.07x = 23,480,001.68
  5. Step 5: Solve for x
    x = 23,480,001.68/5,393.07
  6. Step 6: Final answer
    x = 4,353.74

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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.