Home / 1,339.81-2,009.71-1,277.53

Finding the Fourth Proportional to 1,339.81, 2,009.71 and 1,277.53

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Solution

The fourth proportional to 1,339.81, 2,009.71 and 1,277.53 is: 1,916.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.81 : 2,009.71 = 1,277.53 : x
  2. Step 2: Convert to fraction form
    1,339.81/2,009.71 = 1,277.53/x
  3. Step 3: Cross multiply
    1,339.81x = 2,009.71 × 1,277.53
  4. Step 4: Simplify right side
    1,339.81x = 2,567,461.39
  5. Step 5: Solve for x
    x = 2,567,461.39/1,339.81
  6. Step 6: Final answer
    x = 1,916.29

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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.