Home / 5,172.76-7,758.18-1,887.40

Finding the Fourth Proportional to 5,172.76, 7,758.18 and 1,887.40

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Solution

The fourth proportional to 5,172.76, 7,758.18 and 1,887.40 is: 2,830.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.76 : 7,758.18 = 1,887.40 : x
  2. Step 2: Convert to fraction form
    5,172.76/7,758.18 = 1,887.40/x
  3. Step 3: Cross multiply
    5,172.76x = 7,758.18 × 1,887.40
  4. Step 4: Simplify right side
    5,172.76x = 14,642,788.93
  5. Step 5: Solve for x
    x = 14,642,788.93/5,172.76
  6. Step 6: Final answer
    x = 2,830.75

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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.