Home / 2,877.78-4,316.10-1,317.36

Finding the Fourth Proportional to 2,877.78, 4,316.10 and 1,317.36

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Solution

The fourth proportional to 2,877.78, 4,316.10 and 1,317.36 is: 1,975.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.78 : 4,316.10 = 1,317.36 : x
  2. Step 2: Convert to fraction form
    2,877.78/4,316.10 = 1,317.36/x
  3. Step 3: Cross multiply
    2,877.78x = 4,316.10 × 1,317.36
  4. Step 4: Simplify right side
    2,877.78x = 5,685,857.50
  5. Step 5: Solve for x
    x = 5,685,857.50/2,877.78
  6. Step 6: Final answer
    x = 1,975.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.