Home / 2,038.59-2,812.58-1,408.90

Finding the Fourth Proportional to 2,038.59, 2,812.58 and 1,408.90

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Solution

The fourth proportional to 2,038.59, 2,812.58 and 1,408.90 is: 1,943.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,038.59 : 2,812.58 = 1,408.90 : x
  2. Step 2: Convert to fraction form
    2,038.59/2,812.58 = 1,408.90/x
  3. Step 3: Cross multiply
    2,038.59x = 2,812.58 × 1,408.90
  4. Step 4: Simplify right side
    2,038.59x = 3,962,629.90
  5. Step 5: Solve for x
    x = 3,962,629.90/2,038.59
  6. Step 6: Final answer
    x = 1,943.81

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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.