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Finding the Fourth Proportional to 5,309.79, 7,965.95 and 1,612.23

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Solution

The fourth proportional to 5,309.79, 7,965.95 and 1,612.23 is: 2,418.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309.79 : 7,965.95 = 1,612.23 : x
  2. Step 2: Convert to fraction form
    5,309.79/7,965.95 = 1,612.23/x
  3. Step 3: Cross multiply
    5,309.79x = 7,965.95 × 1,612.23
  4. Step 4: Simplify right side
    5,309.79x = 12,842,935.51
  5. Step 5: Solve for x
    x = 12,842,935.51/5,309.79
  6. Step 6: Final answer
    x = 2,418.73

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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.