Home / 5,209.77-7,812.69-1,698.87

Finding the Fourth Proportional to 5,209.77, 7,812.69 and 1,698.87

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Solution

The fourth proportional to 5,209.77, 7,812.69 and 1,698.87 is: 2,547.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.77 : 7,812.69 = 1,698.87 : x
  2. Step 2: Convert to fraction form
    5,209.77/7,812.69 = 1,698.87/x
  3. Step 3: Cross multiply
    5,209.77x = 7,812.69 × 1,698.87
  4. Step 4: Simplify right side
    5,209.77x = 13,272,744.66
  5. Step 5: Solve for x
    x = 13,272,744.66/5,209.77
  6. Step 6: Final answer
    x = 2,547.66

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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.