Home / 9,118.78-12,582.34-5,289.03

Finding the Fourth Proportional to 9,118.78, 12,582.34 and 5,289.03

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Solution

The fourth proportional to 9,118.78, 12,582.34 and 5,289.03 is: 7,297.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.78 : 12,582.34 = 5,289.03 : x
  2. Step 2: Convert to fraction form
    9,118.78/12,582.34 = 5,289.03/x
  3. Step 3: Cross multiply
    9,118.78x = 12,582.34 × 5,289.03
  4. Step 4: Simplify right side
    9,118.78x = 66,548,360.51
  5. Step 5: Solve for x
    x = 66,548,360.51/9,118.78
  6. Step 6: Final answer
    x = 7,297.95

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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.