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Finding the Fourth Proportional to 2,619.61, 3,926.68 and 975.44

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Solution

The fourth proportional to 2,619.61, 3,926.68 and 975.44 is: 1,462.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.61 : 3,926.68 = 975.44 : x
  2. Step 2: Convert to fraction form
    2,619.61/3,926.68 = 975.44/x
  3. Step 3: Cross multiply
    2,619.61x = 3,926.68 × 975.44
  4. Step 4: Simplify right side
    2,619.61x = 3,830,248.12
  5. Step 5: Solve for x
    x = 3,830,248.12/2,619.61
  6. Step 6: Final answer
    x = 1,462.15

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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.