Home / 4,291.86-6,438.78-1,370.28

Finding the Fourth Proportional to 4,291.86, 6,438.78 and 1,370.28

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Solution

The fourth proportional to 4,291.86, 6,438.78 and 1,370.28 is: 2,055.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,291.86 : 6,438.78 = 1,370.28 : x
  2. Step 2: Convert to fraction form
    4,291.86/6,438.78 = 1,370.28/x
  3. Step 3: Cross multiply
    4,291.86x = 6,438.78 × 1,370.28
  4. Step 4: Simplify right side
    4,291.86x = 8,822,931.46
  5. Step 5: Solve for x
    x = 8,822,931.46/4,291.86
  6. Step 6: Final answer
    x = 2,055.74

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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.