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Finding the Fourth Proportional to 1,657.39, 2,287.06 and 958.81

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Solution

The fourth proportional to 1,657.39, 2,287.06 and 958.81 is: 1,323.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.39 : 2,287.06 = 958.81 : x
  2. Step 2: Convert to fraction form
    1,657.39/2,287.06 = 958.81/x
  3. Step 3: Cross multiply
    1,657.39x = 2,287.06 × 958.81
  4. Step 4: Simplify right side
    1,657.39x = 2,192,856.00
  5. Step 5: Solve for x
    x = 2,192,856.00/1,657.39
  6. Step 6: Final answer
    x = 1,323.08

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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.