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Finding the Fourth Proportional to 1,856.64, 2,562.05 and 1,017.20

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Solution

The fourth proportional to 1,856.64, 2,562.05 and 1,017.20 is: 1,403.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.64 : 2,562.05 = 1,017.20 : x
  2. Step 2: Convert to fraction form
    1,856.64/2,562.05 = 1,017.20/x
  3. Step 3: Cross multiply
    1,856.64x = 2,562.05 × 1,017.20
  4. Step 4: Simplify right side
    1,856.64x = 2,606,099.36
  5. Step 5: Solve for x
    x = 2,606,099.36/1,856.64
  6. Step 6: Final answer
    x = 1,403.66

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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.