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Finding the Fourth Proportional to 1,758.56, 2,637.80 and 1,019.28

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Solution

The fourth proportional to 1,758.56, 2,637.80 and 1,019.28 is: 1,528.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,758.56 : 2,637.80 = 1,019.28 : x
  2. Step 2: Convert to fraction form
    1,758.56/2,637.80 = 1,019.28/x
  3. Step 3: Cross multiply
    1,758.56x = 2,637.80 × 1,019.28
  4. Step 4: Simplify right side
    1,758.56x = 2,688,656.78
  5. Step 5: Solve for x
    x = 2,688,656.78/1,758.56
  6. Step 6: Final answer
    x = 1,528.90

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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.