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Finding the Fourth Proportional to 1,886.78, 2,829.66 and 846.20

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Solution

The fourth proportional to 1,886.78, 2,829.66 and 846.20 is: 1,269.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886.78 : 2,829.66 = 846.20 : x
  2. Step 2: Convert to fraction form
    1,886.78/2,829.66 = 846.20/x
  3. Step 3: Cross multiply
    1,886.78x = 2,829.66 × 846.20
  4. Step 4: Simplify right side
    1,886.78x = 2,394,458.29
  5. Step 5: Solve for x
    x = 2,394,458.29/1,886.78
  6. Step 6: Final answer
    x = 1,269.07

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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.