Home / 3,210.40-4,812.29-1,564.91

Finding the Fourth Proportional to 3,210.40, 4,812.29 and 1,564.91

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Solution

The fourth proportional to 3,210.40, 4,812.29 and 1,564.91 is: 2,345.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.40 : 4,812.29 = 1,564.91 : x
  2. Step 2: Convert to fraction form
    3,210.40/4,812.29 = 1,564.91/x
  3. Step 3: Cross multiply
    3,210.40x = 4,812.29 × 1,564.91
  4. Step 4: Simplify right side
    3,210.40x = 7,530,800.74
  5. Step 5: Solve for x
    x = 7,530,800.74/3,210.40
  6. Step 6: Final answer
    x = 2,345.75

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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.