Home / 1,987.10-2,740.28-1,484.06

Finding the Fourth Proportional to 1,987.10, 2,740.28 and 1,484.06

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Solution

The fourth proportional to 1,987.10, 2,740.28 and 1,484.06 is: 2,046.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987.10 : 2,740.28 = 1,484.06 : x
  2. Step 2: Convert to fraction form
    1,987.10/2,740.28 = 1,484.06/x
  3. Step 3: Cross multiply
    1,987.10x = 2,740.28 × 1,484.06
  4. Step 4: Simplify right side
    1,987.10x = 4,066,739.94
  5. Step 5: Solve for x
    x = 4,066,739.94/1,987.10
  6. Step 6: Final answer
    x = 2,046.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.