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Finding the Fourth Proportional to 2,592.95, 3,888.18 and 860.36

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Solution

The fourth proportional to 2,592.95, 3,888.18 and 860.36 is: 1,290.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,592.95 : 3,888.18 = 860.36 : x
  2. Step 2: Convert to fraction form
    2,592.95/3,888.18 = 860.36/x
  3. Step 3: Cross multiply
    2,592.95x = 3,888.18 × 860.36
  4. Step 4: Simplify right side
    2,592.95x = 3,345,215.10
  5. Step 5: Solve for x
    x = 3,345,215.10/2,592.95
  6. Step 6: Final answer
    x = 1,290.12

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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.