Home / 2,164.86-2,987.49-1,170.13

Finding the Fourth Proportional to 2,164.86, 2,987.49 and 1,170.13

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Solution

The fourth proportional to 2,164.86, 2,987.49 and 1,170.13 is: 1,614.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,164.86 : 2,987.49 = 1,170.13 : x
  2. Step 2: Convert to fraction form
    2,164.86/2,987.49 = 1,170.13/x
  3. Step 3: Cross multiply
    2,164.86x = 2,987.49 × 1,170.13
  4. Step 4: Simplify right side
    2,164.86x = 3,495,762.07
  5. Step 5: Solve for x
    x = 3,495,762.07/2,164.86
  6. Step 6: Final answer
    x = 1,614.78

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1.5x scale

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.