Home / 1,386.13-2,076.76-1,235.47

Finding the Fourth Proportional to 1,386.13, 2,076.76 and 1,235.47

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Solution

The fourth proportional to 1,386.13, 2,076.76 and 1,235.47 is: 1,851.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.13 : 2,076.76 = 1,235.47 : x
  2. Step 2: Convert to fraction form
    1,386.13/2,076.76 = 1,235.47/x
  3. Step 3: Cross multiply
    1,386.13x = 2,076.76 × 1,235.47
  4. Step 4: Simplify right side
    1,386.13x = 2,565,774.68
  5. Step 5: Solve for x
    x = 2,565,774.68/1,386.13
  6. Step 6: Final answer
    x = 1,851.03

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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.