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Finding the Fourth Proportional to 1,676.06, 2,312.71 and 958.19

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Solution

The fourth proportional to 1,676.06, 2,312.71 and 958.19 is: 1,322.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,676.06 : 2,312.71 = 958.19 : x
  2. Step 2: Convert to fraction form
    1,676.06/2,312.71 = 958.19/x
  3. Step 3: Cross multiply
    1,676.06x = 2,312.71 × 958.19
  4. Step 4: Simplify right side
    1,676.06x = 2,216,015.59
  5. Step 5: Solve for x
    x = 2,216,015.59/1,676.06
  6. Step 6: Final answer
    x = 1,322.16

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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.