Home / 2,087.91-3,130.27-700.40

Finding the Fourth Proportional to 2,087.91, 3,130.27 and 700.40

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Solution

The fourth proportional to 2,087.91, 3,130.27 and 700.40 is: 1,050.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.91 : 3,130.27 = 700.40 : x
  2. Step 2: Convert to fraction form
    2,087.91/3,130.27 = 700.40/x
  3. Step 3: Cross multiply
    2,087.91x = 3,130.27 × 700.40
  4. Step 4: Simplify right side
    2,087.91x = 2,192,447.18
  5. Step 5: Solve for x
    x = 2,192,447.18/2,087.91
  6. Step 6: Final answer
    x = 1,050.07

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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.