Home / 2,688.38-3,710.03-1,509.69

Finding the Fourth Proportional to 2,688.38, 3,710.03 and 1,509.69

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Solution

The fourth proportional to 2,688.38, 3,710.03 and 1,509.69 is: 2,083.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.38 : 3,710.03 = 1,509.69 : x
  2. Step 2: Convert to fraction form
    2,688.38/3,710.03 = 1,509.69/x
  3. Step 3: Cross multiply
    2,688.38x = 3,710.03 × 1,509.69
  4. Step 4: Simplify right side
    2,688.38x = 5,600,987.64
  5. Step 5: Solve for x
    x = 5,600,987.64/2,688.38
  6. Step 6: Final answer
    x = 2,083.41

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1.5x scale

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.