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Finding the Fourth Proportional to 1,319.04, 1,820.52 and 847.53

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Solution

The fourth proportional to 1,319.04, 1,820.52 and 847.53 is: 1,169.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.04 : 1,820.52 = 847.53 : x
  2. Step 2: Convert to fraction form
    1,319.04/1,820.52 = 847.53/x
  3. Step 3: Cross multiply
    1,319.04x = 1,820.52 × 847.53
  4. Step 4: Simplify right side
    1,319.04x = 1,542,946.38
  5. Step 5: Solve for x
    x = 1,542,946.38/1,319.04
  6. Step 6: Final answer
    x = 1,169.75

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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.