Home / 1,307.38-1,816.70-1,291.06

Finding the Fourth Proportional to 1,307.38, 1,816.70 and 1,291.06

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Solution

The fourth proportional to 1,307.38, 1,816.70 and 1,291.06 is: 1,794.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.38 : 1,816.70 = 1,291.06 : x
  2. Step 2: Convert to fraction form
    1,307.38/1,816.70 = 1,291.06/x
  3. Step 3: Cross multiply
    1,307.38x = 1,816.70 × 1,291.06
  4. Step 4: Simplify right side
    1,307.38x = 2,345,462.25
  5. Step 5: Solve for x
    x = 2,345,462.25/1,307.38
  6. Step 6: Final answer
    x = 1,794.02

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.