Home / 5,142.49-7,712.14-1,855.16

Finding the Fourth Proportional to 5,142.49, 7,712.14 and 1,855.16

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Solution

The fourth proportional to 5,142.49, 7,712.14 and 1,855.16 is: 2,782.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.49 : 7,712.14 = 1,855.16 : x
  2. Step 2: Convert to fraction form
    5,142.49/7,712.14 = 1,855.16/x
  3. Step 3: Cross multiply
    5,142.49x = 7,712.14 × 1,855.16
  4. Step 4: Simplify right side
    5,142.49x = 14,307,253.64
  5. Step 5: Solve for x
    x = 14,307,253.64/5,142.49
  6. Step 6: Final answer
    x = 2,782.16

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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.