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Finding the Fourth Proportional to 4,578.61, 6,317.47 and 2,985.12

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Solution

The fourth proportional to 4,578.61, 6,317.47 and 2,985.12 is: 4,118.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,578.61 : 6,317.47 = 2,985.12 : x
  2. Step 2: Convert to fraction form
    4,578.61/6,317.47 = 2,985.12/x
  3. Step 3: Cross multiply
    4,578.61x = 6,317.47 × 2,985.12
  4. Step 4: Simplify right side
    4,578.61x = 18,858,406.05
  5. Step 5: Solve for x
    x = 18,858,406.05/4,578.61
  6. Step 6: Final answer
    x = 4,118.81

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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.