Home / 2,099.70-2,895.59-1,380.62

Finding the Fourth Proportional to 2,099.70, 2,895.59 and 1,380.62

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Solution

The fourth proportional to 2,099.70, 2,895.59 and 1,380.62 is: 1,903.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.70 : 2,895.59 = 1,380.62 : x
  2. Step 2: Convert to fraction form
    2,099.70/2,895.59 = 1,380.62/x
  3. Step 3: Cross multiply
    2,099.70x = 2,895.59 × 1,380.62
  4. Step 4: Simplify right side
    2,099.70x = 3,997,688.08
  5. Step 5: Solve for x
    x = 3,997,688.08/2,099.70
  6. Step 6: Final answer
    x = 1,903.93

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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.