Home / 2,386.47-3,575.81-1,214.86

Finding the Fourth Proportional to 2,386.47, 3,575.81 and 1,214.86

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Solution

The fourth proportional to 2,386.47, 3,575.81 and 1,214.86 is: 1,820.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.47 : 3,575.81 = 1,214.86 : x
  2. Step 2: Convert to fraction form
    2,386.47/3,575.81 = 1,214.86/x
  3. Step 3: Cross multiply
    2,386.47x = 3,575.81 × 1,214.86
  4. Step 4: Simplify right side
    2,386.47x = 4,344,108.54
  5. Step 5: Solve for x
    x = 4,344,108.54/2,386.47
  6. Step 6: Final answer
    x = 1,820.31

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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.