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Finding the Fourth Proportional to 1,877.78, 2,829.34 and 1,555.88

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Solution

The fourth proportional to 1,877.78, 2,829.34 and 1,555.88 is: 2,344.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877.78 : 2,829.34 = 1,555.88 : x
  2. Step 2: Convert to fraction form
    1,877.78/2,829.34 = 1,555.88/x
  3. Step 3: Cross multiply
    1,877.78x = 2,829.34 × 1,555.88
  4. Step 4: Simplify right side
    1,877.78x = 4,402,116.26
  5. Step 5: Solve for x
    x = 4,402,116.26/1,877.78
  6. Step 6: Final answer
    x = 2,344.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.