Home / 1,971.18-2,720.16-1,087.02

Finding the Fourth Proportional to 1,971.18, 2,720.16 and 1,087.02

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Solution

The fourth proportional to 1,971.18, 2,720.16 and 1,087.02 is: 1,500.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.18 : 2,720.16 = 1,087.02 : x
  2. Step 2: Convert to fraction form
    1,971.18/2,720.16 = 1,087.02/x
  3. Step 3: Cross multiply
    1,971.18x = 2,720.16 × 1,087.02
  4. Step 4: Simplify right side
    1,971.18x = 2,956,868.32
  5. Step 5: Solve for x
    x = 2,956,868.32/1,971.18
  6. Step 6: Final answer
    x = 1,500.05

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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.