Home / 9,539.79-13,164.68-5,290.79

Finding the Fourth Proportional to 9,539.79, 13,164.68 and 5,290.79

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Solution

The fourth proportional to 9,539.79, 13,164.68 and 5,290.79 is: 7,301.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,539.79 : 13,164.68 = 5,290.79 : x
  2. Step 2: Convert to fraction form
    9,539.79/13,164.68 = 5,290.79/x
  3. Step 3: Cross multiply
    9,539.79x = 13,164.68 × 5,290.79
  4. Step 4: Simplify right side
    9,539.79x = 69,651,465.02
  5. Step 5: Solve for x
    x = 69,651,465.02/9,539.79
  6. Step 6: Final answer
    x = 7,301.15

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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.