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Finding the Fourth Proportional to 2,888.55, 3,985.13 and 1,894.38

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Solution

The fourth proportional to 2,888.55, 3,985.13 and 1,894.38 is: 2,613.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.55 : 3,985.13 = 1,894.38 : x
  2. Step 2: Convert to fraction form
    2,888.55/3,985.13 = 1,894.38/x
  3. Step 3: Cross multiply
    2,888.55x = 3,985.13 × 1,894.38
  4. Step 4: Simplify right side
    2,888.55x = 7,549,355.31
  5. Step 5: Solve for x
    x = 7,549,355.31/2,888.55
  6. Step 6: Final answer
    x = 2,613.54

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1.5x scale

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.