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Finding the Fourth Proportional to 4,605.55, 6,909.01 and 1,643.76

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Solution

The fourth proportional to 4,605.55, 6,909.01 and 1,643.76 is: 2,465.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,605.55 : 6,909.01 = 1,643.76 : x
  2. Step 2: Convert to fraction form
    4,605.55/6,909.01 = 1,643.76/x
  3. Step 3: Cross multiply
    4,605.55x = 6,909.01 × 1,643.76
  4. Step 4: Simplify right side
    4,605.55x = 11,356,750.17
  5. Step 5: Solve for x
    x = 11,356,750.17/4,605.55
  6. Step 6: Final answer
    x = 2,465.88

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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.