Home / 9,578.74-13,218.63-5,386.99

Finding the Fourth Proportional to 9,578.74, 13,218.63 and 5,386.99

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Solution

The fourth proportional to 9,578.74, 13,218.63 and 5,386.99 is: 7,434.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,578.74 : 13,218.63 = 5,386.99 : x
  2. Step 2: Convert to fraction form
    9,578.74/13,218.63 = 5,386.99/x
  3. Step 3: Cross multiply
    9,578.74x = 13,218.63 × 5,386.99
  4. Step 4: Simplify right side
    9,578.74x = 71,208,627.62
  5. Step 5: Solve for x
    x = 71,208,627.62/9,578.74
  6. Step 6: Final answer
    x = 7,434.03

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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.