Home / 5,142.69-7,713.96-1,247.07

Finding the Fourth Proportional to 5,142.69, 7,713.96 and 1,247.07

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Solution

The fourth proportional to 5,142.69, 7,713.96 and 1,247.07 is: 1,870.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.69 : 7,713.96 = 1,247.07 : x
  2. Step 2: Convert to fraction form
    5,142.69/7,713.96 = 1,247.07/x
  3. Step 3: Cross multiply
    5,142.69x = 7,713.96 × 1,247.07
  4. Step 4: Simplify right side
    5,142.69x = 9,619,848.10
  5. Step 5: Solve for x
    x = 9,619,848.10/5,142.69
  6. Step 6: Final answer
    x = 1,870.59

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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.