Home / 2,111.03-3,166.55-877.13

Finding the Fourth Proportional to 2,111.03, 3,166.55 and 877.13

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Solution

The fourth proportional to 2,111.03, 3,166.55 and 877.13 is: 1,315.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,111.03 : 3,166.55 = 877.13 : x
  2. Step 2: Convert to fraction form
    2,111.03/3,166.55 = 877.13/x
  3. Step 3: Cross multiply
    2,111.03x = 3,166.55 × 877.13
  4. Step 4: Simplify right side
    2,111.03x = 2,777,476.00
  5. Step 5: Solve for x
    x = 2,777,476.00/2,111.03
  6. Step 6: Final answer
    x = 1,315.70

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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.