Home / 2,688.10-3,709.51-1,509.15

Finding the Fourth Proportional to 2,688.10, 3,709.51 and 1,509.15

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Solution

The fourth proportional to 2,688.10, 3,709.51 and 1,509.15 is: 2,082.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.10 : 3,709.51 = 1,509.15 : x
  2. Step 2: Convert to fraction form
    2,688.10/3,709.51 = 1,509.15/x
  3. Step 3: Cross multiply
    2,688.10x = 3,709.51 × 1,509.15
  4. Step 4: Simplify right side
    2,688.10x = 5,598,207.02
  5. Step 5: Solve for x
    x = 5,598,207.02/2,688.10
  6. Step 6: Final answer
    x = 2,082.59

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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.