Home / 7,319.88-10,970.64-3,155.16

Finding the Fourth Proportional to 7,319.88, 10,970.64 and 3,155.16

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Solution

The fourth proportional to 7,319.88, 10,970.64 and 3,155.16 is: 4,728.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319.88 : 10,970.64 = 3,155.16 : x
  2. Step 2: Convert to fraction form
    7,319.88/10,970.64 = 3,155.16/x
  3. Step 3: Cross multiply
    7,319.88x = 10,970.64 × 3,155.16
  4. Step 4: Simplify right side
    7,319.88x = 34,614,124.50
  5. Step 5: Solve for x
    x = 34,614,124.50/7,319.88
  6. Step 6: Final answer
    x = 4,728.78

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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.