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Finding the Fourth Proportional to 2,864.99, 3,953.76 and 1,605.99

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Solution

The fourth proportional to 2,864.99, 3,953.76 and 1,605.99 is: 2,216.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,864.99 : 3,953.76 = 1,605.99 : x
  2. Step 2: Convert to fraction form
    2,864.99/3,953.76 = 1,605.99/x
  3. Step 3: Cross multiply
    2,864.99x = 3,953.76 × 1,605.99
  4. Step 4: Simplify right side
    2,864.99x = 6,349,699.02
  5. Step 5: Solve for x
    x = 6,349,699.02/2,864.99
  6. Step 6: Final answer
    x = 2,216.31

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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.