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Finding the Fourth Proportional to 1,878.76, 2,817.12 and 1,058.63

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Solution

The fourth proportional to 1,878.76, 2,817.12 and 1,058.63 is: 1,587.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.76 : 2,817.12 = 1,058.63 : x
  2. Step 2: Convert to fraction form
    1,878.76/2,817.12 = 1,058.63/x
  3. Step 3: Cross multiply
    1,878.76x = 2,817.12 × 1,058.63
  4. Step 4: Simplify right side
    1,878.76x = 2,982,287.75
  5. Step 5: Solve for x
    x = 2,982,287.75/1,878.76
  6. Step 6: Final answer
    x = 1,587.37

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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.