Home / 1,327.51-1,987.61-1,001.89

Finding the Fourth Proportional to 1,327.51, 1,987.61 and 1,001.89

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Solution

The fourth proportional to 1,327.51, 1,987.61 and 1,001.89 is: 1,500.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.51 : 1,987.61 = 1,001.89 : x
  2. Step 2: Convert to fraction form
    1,327.51/1,987.61 = 1,001.89/x
  3. Step 3: Cross multiply
    1,327.51x = 1,987.61 × 1,001.89
  4. Step 4: Simplify right side
    1,327.51x = 1,991,351.64
  5. Step 5: Solve for x
    x = 1,991,351.64/1,327.51
  6. Step 6: Final answer
    x = 1,500.07

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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.