Home / 1,316.05-1,810.56-1,279.60

Finding the Fourth Proportional to 1,316.05, 1,810.56 and 1,279.60

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Solution

The fourth proportional to 1,316.05, 1,810.56 and 1,279.60 is: 1,760.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.05 : 1,810.56 = 1,279.60 : x
  2. Step 2: Convert to fraction form
    1,316.05/1,810.56 = 1,279.60/x
  3. Step 3: Cross multiply
    1,316.05x = 1,810.56 × 1,279.60
  4. Step 4: Simplify right side
    1,316.05x = 2,316,792.58
  5. Step 5: Solve for x
    x = 2,316,792.58/1,316.05
  6. Step 6: Final answer
    x = 1,760.41

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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.