Home / 1,717.10-2,369.59-931.15

Finding the Fourth Proportional to 1,717.10, 2,369.59 and 931.15

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Solution

The fourth proportional to 1,717.10, 2,369.59 and 931.15 is: 1,284.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.10 : 2,369.59 = 931.15 : x
  2. Step 2: Convert to fraction form
    1,717.10/2,369.59 = 931.15/x
  3. Step 3: Cross multiply
    1,717.10x = 2,369.59 × 931.15
  4. Step 4: Simplify right side
    1,717.10x = 2,206,427.22
  5. Step 5: Solve for x
    x = 2,206,427.22/1,717.10
  6. Step 6: Final answer
    x = 1,284.97

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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.