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Finding the Fourth Proportional to 5,378.76, 8,020.02 and 5,296.77

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Solution

The fourth proportional to 5,378.76, 8,020.02 and 5,296.77 is: 7,897.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.76 : 8,020.02 = 5,296.77 : x
  2. Step 2: Convert to fraction form
    5,378.76/8,020.02 = 5,296.77/x
  3. Step 3: Cross multiply
    5,378.76x = 8,020.02 × 5,296.77
  4. Step 4: Simplify right side
    5,378.76x = 42,480,201.34
  5. Step 5: Solve for x
    x = 42,480,201.34/5,378.76
  6. Step 6: Final answer
    x = 7,897.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.