Home / 7,775.47-11,651.69-6,398.59

Finding the Fourth Proportional to 7,775.47, 11,651.69 and 6,398.59

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Solution

The fourth proportional to 7,775.47, 11,651.69 and 6,398.59 is: 9,588.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,775.47 : 11,651.69 = 6,398.59 : x
  2. Step 2: Convert to fraction form
    7,775.47/11,651.69 = 6,398.59/x
  3. Step 3: Cross multiply
    7,775.47x = 11,651.69 × 6,398.59
  4. Step 4: Simplify right side
    7,775.47x = 74,554,355.12
  5. Step 5: Solve for x
    x = 74,554,355.12/7,775.47
  6. Step 6: Final answer
    x = 9,588.40

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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.