Home / 2,688.21-3,710.19-1,569.80

Finding the Fourth Proportional to 2,688.21, 3,710.19 and 1,569.80

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Solution

The fourth proportional to 2,688.21, 3,710.19 and 1,569.80 is: 2,166.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.21 : 3,710.19 = 1,569.80 : x
  2. Step 2: Convert to fraction form
    2,688.21/3,710.19 = 1,569.80/x
  3. Step 3: Cross multiply
    2,688.21x = 3,710.19 × 1,569.80
  4. Step 4: Simplify right side
    2,688.21x = 5,824,237.71
  5. Step 5: Solve for x
    x = 5,824,237.71/2,688.21
  6. Step 6: Final answer
    x = 2,166.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.