Home / 9,341.10-12,890.80-5,149.50

Finding the Fourth Proportional to 9,341.10, 12,890.80 and 5,149.50

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Solution

The fourth proportional to 9,341.10, 12,890.80 and 5,149.50 is: 7,106.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,341.10 : 12,890.80 = 5,149.50 : x
  2. Step 2: Convert to fraction form
    9,341.10/12,890.80 = 5,149.50/x
  3. Step 3: Cross multiply
    9,341.10x = 12,890.80 × 5,149.50
  4. Step 4: Simplify right side
    9,341.10x = 66,381,174.60
  5. Step 5: Solve for x
    x = 66,381,174.60/9,341.10
  6. Step 6: Final answer
    x = 7,106.36

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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.