Home / 2,688.80-3,710.61-1,509.84

Finding the Fourth Proportional to 2,688.80, 3,710.61 and 1,509.84

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Solution

The fourth proportional to 2,688.80, 3,710.61 and 1,509.84 is: 2,083.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.80 : 3,710.61 = 1,509.84 : x
  2. Step 2: Convert to fraction form
    2,688.80/3,710.61 = 1,509.84/x
  3. Step 3: Cross multiply
    2,688.80x = 3,710.61 × 1,509.84
  4. Step 4: Simplify right side
    2,688.80x = 5,602,427.40
  5. Step 5: Solve for x
    x = 5,602,427.40/2,688.80
  6. Step 6: Final answer
    x = 2,083.62

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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.