Home / 2,143.75-2,957.73-1,199.45

Finding the Fourth Proportional to 2,143.75, 2,957.73 and 1,199.45

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Solution

The fourth proportional to 2,143.75, 2,957.73 and 1,199.45 is: 1,654.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.75 : 2,957.73 = 1,199.45 : x
  2. Step 2: Convert to fraction form
    2,143.75/2,957.73 = 1,199.45/x
  3. Step 3: Cross multiply
    2,143.75x = 2,957.73 × 1,199.45
  4. Step 4: Simplify right side
    2,143.75x = 3,547,649.25
  5. Step 5: Solve for x
    x = 3,547,649.25/2,143.75
  6. Step 6: Final answer
    x = 1,654.88

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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.