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Finding the Fourth Proportional to 3,643.86, 5,465.79 and 1,695

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Solution

The fourth proportional to 3,643.86, 5,465.79 and 1,695 is: 2,542.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,643.86 : 5,465.79 = 1,695 : x
  2. Step 2: Convert to fraction form
    3,643.86/5,465.79 = 1,695/x
  3. Step 3: Cross multiply
    3,643.86x = 5,465.79 × 1,695
  4. Step 4: Simplify right side
    3,643.86x = 9,264,514.05
  5. Step 5: Solve for x
    x = 9,264,514.05/3,643.86
  6. Step 6: Final answer
    x = 2,542.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.