Home / 2,087.07-3,130.65-700.45

Finding the Fourth Proportional to 2,087.07, 3,130.65 and 700.45

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Solution

The fourth proportional to 2,087.07, 3,130.65 and 700.45 is: 1,050.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.07 : 3,130.65 = 700.45 : x
  2. Step 2: Convert to fraction form
    2,087.07/3,130.65 = 700.45/x
  3. Step 3: Cross multiply
    2,087.07x = 3,130.65 × 700.45
  4. Step 4: Simplify right side
    2,087.07x = 2,192,855.97
  5. Step 5: Solve for x
    x = 2,192,855.97/2,087.07
  6. Step 6: Final answer
    x = 1,050.69

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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.