Home / 7,038.90-10,558.89-3,143.70

Finding the Fourth Proportional to 7,038.90, 10,558.89 and 3,143.70

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Solution

The fourth proportional to 7,038.90, 10,558.89 and 3,143.70 is: 4,715.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,038.90 : 10,558.89 = 3,143.70 : x
  2. Step 2: Convert to fraction form
    7,038.90/10,558.89 = 3,143.70/x
  3. Step 3: Cross multiply
    7,038.90x = 10,558.89 × 3,143.70
  4. Step 4: Simplify right side
    7,038.90x = 33,193,982.49
  5. Step 5: Solve for x
    x = 33,193,982.49/7,038.90
  6. Step 6: Final answer
    x = 4,715.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.