Home / 5,131.40-7,697.29-2,319.70

Finding the Fourth Proportional to 5,131.40, 7,697.29 and 2,319.70

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Solution

The fourth proportional to 5,131.40, 7,697.29 and 2,319.70 is: 3,479.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.40 : 7,697.29 = 2,319.70 : x
  2. Step 2: Convert to fraction form
    5,131.40/7,697.29 = 2,319.70/x
  3. Step 3: Cross multiply
    5,131.40x = 7,697.29 × 2,319.70
  4. Step 4: Simplify right side
    5,131.40x = 17,855,411.44
  5. Step 5: Solve for x
    x = 17,855,411.44/5,131.40
  6. Step 6: Final answer
    x = 3,479.64

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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.