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Finding the Fourth Proportional to 1,507.03, 2,079.67 and 843.88

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Solution

The fourth proportional to 1,507.03, 2,079.67 and 843.88 is: 1,164.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507.03 : 2,079.67 = 843.88 : x
  2. Step 2: Convert to fraction form
    1,507.03/2,079.67 = 843.88/x
  3. Step 3: Cross multiply
    1,507.03x = 2,079.67 × 843.88
  4. Step 4: Simplify right side
    1,507.03x = 1,754,989.81
  5. Step 5: Solve for x
    x = 1,754,989.81/1,507.03
  6. Step 6: Final answer
    x = 1,164.53

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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.