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Finding the Fourth Proportional to 1,323.80, 1,823.15 and 1,295.10

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Solution

The fourth proportional to 1,323.80, 1,823.15 and 1,295.10 is: 1,783.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.80 : 1,823.15 = 1,295.10 : x
  2. Step 2: Convert to fraction form
    1,323.80/1,823.15 = 1,295.10/x
  3. Step 3: Cross multiply
    1,323.80x = 1,823.15 × 1,295.10
  4. Step 4: Simplify right side
    1,323.80x = 2,361,157.37
  5. Step 5: Solve for x
    x = 2,361,157.37/1,323.80
  6. Step 6: Final answer
    x = 1,783.62

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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.