Home / 5,318.15-7,980.53-2,031.57

Finding the Fourth Proportional to 5,318.15, 7,980.53 and 2,031.57

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Solution

The fourth proportional to 5,318.15, 7,980.53 and 2,031.57 is: 3,048.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.15 : 7,980.53 = 2,031.57 : x
  2. Step 2: Convert to fraction form
    5,318.15/7,980.53 = 2,031.57/x
  3. Step 3: Cross multiply
    5,318.15x = 7,980.53 × 2,031.57
  4. Step 4: Simplify right side
    5,318.15x = 16,212,995.17
  5. Step 5: Solve for x
    x = 16,212,995.17/5,318.15
  6. Step 6: Final answer
    x = 3,048.62

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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.