Home / 1,315.08-1,961.46-1,151.64

Finding the Fourth Proportional to 1,315.08, 1,961.46 and 1,151.64

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Solution

The fourth proportional to 1,315.08, 1,961.46 and 1,151.64 is: 1,717.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.08 : 1,961.46 = 1,151.64 : x
  2. Step 2: Convert to fraction form
    1,315.08/1,961.46 = 1,151.64/x
  3. Step 3: Cross multiply
    1,315.08x = 1,961.46 × 1,151.64
  4. Step 4: Simplify right side
    1,315.08x = 2,258,895.79
  5. Step 5: Solve for x
    x = 2,258,895.79/1,315.08
  6. Step 6: Final answer
    x = 1,717.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.