Home / 9,340.65-12,890.21-5,148.90

Finding the Fourth Proportional to 9,340.65, 12,890.21 and 5,148.90

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Solution

The fourth proportional to 9,340.65, 12,890.21 and 5,148.90 is: 7,105.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,340.65 : 12,890.21 = 5,148.90 : x
  2. Step 2: Convert to fraction form
    9,340.65/12,890.21 = 5,148.90/x
  3. Step 3: Cross multiply
    9,340.65x = 12,890.21 × 5,148.90
  4. Step 4: Simplify right side
    9,340.65x = 66,370,376.52
  5. Step 5: Solve for x
    x = 66,370,376.52/9,340.65
  6. Step 6: Final answer
    x = 7,105.54

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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.