Home / 2,099.28-2,895.12-1,313.40

Finding the Fourth Proportional to 2,099.28, 2,895.12 and 1,313.40

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Solution

The fourth proportional to 2,099.28, 2,895.12 and 1,313.40 is: 1,811.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.28 : 2,895.12 = 1,313.40 : x
  2. Step 2: Convert to fraction form
    2,099.28/2,895.12 = 1,313.40/x
  3. Step 3: Cross multiply
    2,099.28x = 2,895.12 × 1,313.40
  4. Step 4: Simplify right side
    2,099.28x = 3,802,450.61
  5. Step 5: Solve for x
    x = 3,802,450.61/2,099.28
  6. Step 6: Final answer
    x = 1,811.31

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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.