Home / 5,470.24-8,210.40-3,820.72

Finding the Fourth Proportional to 5,470.24, 8,210.40 and 3,820.72

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Solution

The fourth proportional to 5,470.24, 8,210.40 and 3,820.72 is: 5,734.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,470.24 : 8,210.40 = 3,820.72 : x
  2. Step 2: Convert to fraction form
    5,470.24/8,210.40 = 3,820.72/x
  3. Step 3: Cross multiply
    5,470.24x = 8,210.40 × 3,820.72
  4. Step 4: Simplify right side
    5,470.24x = 31,369,639.49
  5. Step 5: Solve for x
    x = 31,369,639.49/5,470.24
  6. Step 6: Final answer
    x = 5,734.60

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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.