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Finding the Fourth Proportional to 6,578.79, 9,085.12 and 5,629.02

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Solution

The fourth proportional to 6,578.79, 9,085.12 and 5,629.02 is: 7,773.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,578.79 : 9,085.12 = 5,629.02 : x
  2. Step 2: Convert to fraction form
    6,578.79/9,085.12 = 5,629.02/x
  3. Step 3: Cross multiply
    6,578.79x = 9,085.12 × 5,629.02
  4. Step 4: Simplify right side
    6,578.79x = 51,140,322.71
  5. Step 5: Solve for x
    x = 51,140,322.71/6,578.79
  6. Step 6: Final answer
    x = 7,773.51

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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.