Home / 6,620.26-9,139.08-4,266.40

Finding the Fourth Proportional to 6,620.26, 9,139.08 and 4,266.40

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Solution

The fourth proportional to 6,620.26, 9,139.08 and 4,266.40 is: 5,889.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.26 : 9,139.08 = 4,266.40 : x
  2. Step 2: Convert to fraction form
    6,620.26/9,139.08 = 4,266.40/x
  3. Step 3: Cross multiply
    6,620.26x = 9,139.08 × 4,266.40
  4. Step 4: Simplify right side
    6,620.26x = 38,990,970.91
  5. Step 5: Solve for x
    x = 38,990,970.91/6,620.26
  6. Step 6: Final answer
    x = 5,889.64

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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.