Home / 7,810.32-11,636.61-7,438.80

Finding the Fourth Proportional to 7,810.32, 11,636.61 and 7,438.80

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Solution

The fourth proportional to 7,810.32, 11,636.61 and 7,438.80 is: 11,083.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,810.32 : 11,636.61 = 7,438.80 : x
  2. Step 2: Convert to fraction form
    7,810.32/11,636.61 = 7,438.80/x
  3. Step 3: Cross multiply
    7,810.32x = 11,636.61 × 7,438.80
  4. Step 4: Simplify right side
    7,810.32x = 86,562,414.47
  5. Step 5: Solve for x
    x = 86,562,414.47/7,810.32
  6. Step 6: Final answer
    x = 11,083.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.