Home / 2,130.15-2,937.98-1,891.13

Finding the Fourth Proportional to 2,130.15, 2,937.98 and 1,891.13

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Solution

The fourth proportional to 2,130.15, 2,937.98 and 1,891.13 is: 2,608.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.15 : 2,937.98 = 1,891.13 : x
  2. Step 2: Convert to fraction form
    2,130.15/2,937.98 = 1,891.13/x
  3. Step 3: Cross multiply
    2,130.15x = 2,937.98 × 1,891.13
  4. Step 4: Simplify right side
    2,130.15x = 5,556,077.97
  5. Step 5: Solve for x
    x = 5,556,077.97/2,130.15
  6. Step 6: Final answer
    x = 2,608.30

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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.