Home / 2,881.51-4,319.35-1,125.43

Finding the Fourth Proportional to 2,881.51, 4,319.35 and 1,125.43

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Solution

The fourth proportional to 2,881.51, 4,319.35 and 1,125.43 is: 1,687.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,881.51 : 4,319.35 = 1,125.43 : x
  2. Step 2: Convert to fraction form
    2,881.51/4,319.35 = 1,125.43/x
  3. Step 3: Cross multiply
    2,881.51x = 4,319.35 × 1,125.43
  4. Step 4: Simplify right side
    2,881.51x = 4,861,126.07
  5. Step 5: Solve for x
    x = 4,861,126.07/2,881.51
  6. Step 6: Final answer
    x = 1,687.01

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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.