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Finding the Fourth Proportional to 1,856.30, 2,560.86 and 1,070.18

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Solution

The fourth proportional to 1,856.30, 2,560.86 and 1,070.18 is: 1,476.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.30 : 2,560.86 = 1,070.18 : x
  2. Step 2: Convert to fraction form
    1,856.30/2,560.86 = 1,070.18/x
  3. Step 3: Cross multiply
    1,856.30x = 2,560.86 × 1,070.18
  4. Step 4: Simplify right side
    1,856.30x = 2,740,581.15
  5. Step 5: Solve for x
    x = 2,740,581.15/1,856.30
  6. Step 6: Final answer
    x = 1,476.37

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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.