Home / 2,688.15-3,709.65-1,509.23

Finding the Fourth Proportional to 2,688.15, 3,709.65 and 1,509.23

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Solution

The fourth proportional to 2,688.15, 3,709.65 and 1,509.23 is: 2,082.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.15 : 3,709.65 = 1,509.23 : x
  2. Step 2: Convert to fraction form
    2,688.15/3,709.65 = 1,509.23/x
  3. Step 3: Cross multiply
    2,688.15x = 3,709.65 × 1,509.23
  4. Step 4: Simplify right side
    2,688.15x = 5,598,730.00
  5. Step 5: Solve for x
    x = 5,598,730.00/2,688.15
  6. Step 6: Final answer
    x = 2,082.74

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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.