Home / 2,130.57-2,940.17-1,186.35

Finding the Fourth Proportional to 2,130.57, 2,940.17 and 1,186.35

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Solution

The fourth proportional to 2,130.57, 2,940.17 and 1,186.35 is: 1,637.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.57 : 2,940.17 = 1,186.35 : x
  2. Step 2: Convert to fraction form
    2,130.57/2,940.17 = 1,186.35/x
  3. Step 3: Cross multiply
    2,130.57x = 2,940.17 × 1,186.35
  4. Step 4: Simplify right side
    2,130.57x = 3,488,064.75
  5. Step 5: Solve for x
    x = 3,488,064.75/2,130.57
  6. Step 6: Final answer
    x = 1,637.15

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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.