Home / 7,671.28-11,501.52-2,987.68

Finding the Fourth Proportional to 7,671.28, 11,501.52 and 2,987.68

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Solution

The fourth proportional to 7,671.28, 11,501.52 and 2,987.68 is: 4,479.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,671.28 : 11,501.52 = 2,987.68 : x
  2. Step 2: Convert to fraction form
    7,671.28/11,501.52 = 2,987.68/x
  3. Step 3: Cross multiply
    7,671.28x = 11,501.52 × 2,987.68
  4. Step 4: Simplify right side
    7,671.28x = 34,362,861.27
  5. Step 5: Solve for x
    x = 34,362,861.27/7,671.28
  6. Step 6: Final answer
    x = 4,479.42

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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.