Home / 7,155.20-9,890.70-5,969.36

Finding the Fourth Proportional to 7,155.20, 9,890.70 and 5,969.36

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Solution

The fourth proportional to 7,155.20, 9,890.70 and 5,969.36 is: 8,251.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.20 : 9,890.70 = 5,969.36 : x
  2. Step 2: Convert to fraction form
    7,155.20/9,890.70 = 5,969.36/x
  3. Step 3: Cross multiply
    7,155.20x = 9,890.70 × 5,969.36
  4. Step 4: Simplify right side
    7,155.20x = 59,041,148.95
  5. Step 5: Solve for x
    x = 59,041,148.95/7,155.20
  6. Step 6: Final answer
    x = 8,251.50

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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.