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Finding the Fourth Proportional to 2,315.25, 3,473.06 and 947.25

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Solution

The fourth proportional to 2,315.25, 3,473.06 and 947.25 is: 1,420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.25 : 3,473.06 = 947.25 : x
  2. Step 2: Convert to fraction form
    2,315.25/3,473.06 = 947.25/x
  3. Step 3: Cross multiply
    2,315.25x = 3,473.06 × 947.25
  4. Step 4: Simplify right side
    2,315.25x = 3,289,851.35
  5. Step 5: Solve for x
    x = 3,289,851.35/2,315.25
  6. Step 6: Final answer
    x = 1,420.95

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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.