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Finding the Fourth Proportional to 3,090, 4,653.50 and 2,813.52

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Solution

The fourth proportional to 3,090, 4,653.50 and 2,813.52 is: 4,237.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090 : 4,653.50 = 2,813.52 : x
  2. Step 2: Convert to fraction form
    3,090/4,653.50 = 2,813.52/x
  3. Step 3: Cross multiply
    3,090x = 4,653.50 × 2,813.52
  4. Step 4: Simplify right side
    3,090x = 13,092,715.32
  5. Step 5: Solve for x
    x = 13,092,715.32/3,090
  6. Step 6: Final answer
    x = 4,237.12

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.