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Finding the Fourth Proportional to 2,693.52, 3,715.74 and 1,643.76

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Solution

The fourth proportional to 2,693.52, 3,715.74 and 1,643.76 is: 2,267.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,693.52 : 3,715.74 = 1,643.76 : x
  2. Step 2: Convert to fraction form
    2,693.52/3,715.74 = 1,643.76/x
  3. Step 3: Cross multiply
    2,693.52x = 3,715.74 × 1,643.76
  4. Step 4: Simplify right side
    2,693.52x = 6,107,784.78
  5. Step 5: Solve for x
    x = 6,107,784.78/2,693.52
  6. Step 6: Final answer
    x = 2,267.58

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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.