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Finding the Fourth Proportional to 3,615.66, 4,985.55 and 2,950.47

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Solution

The fourth proportional to 3,615.66, 4,985.55 and 2,950.47 is: 4,068.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.66 : 4,985.55 = 2,950.47 : x
  2. Step 2: Convert to fraction form
    3,615.66/4,985.55 = 2,950.47/x
  3. Step 3: Cross multiply
    3,615.66x = 4,985.55 × 2,950.47
  4. Step 4: Simplify right side
    3,615.66x = 14,709,715.71
  5. Step 5: Solve for x
    x = 14,709,715.71/3,615.66
  6. Step 6: Final answer
    x = 4,068.33

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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.