Home / 2,864.72-3,953.04-1,605.68

Finding the Fourth Proportional to 2,864.72, 3,953.04 and 1,605.68

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Solution

The fourth proportional to 2,864.72, 3,953.04 and 1,605.68 is: 2,215.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,864.72 : 3,953.04 = 1,605.68 : x
  2. Step 2: Convert to fraction form
    2,864.72/3,953.04 = 1,605.68/x
  3. Step 3: Cross multiply
    2,864.72x = 3,953.04 × 1,605.68
  4. Step 4: Simplify right side
    2,864.72x = 6,347,317.27
  5. Step 5: Solve for x
    x = 6,347,317.27/2,864.72
  6. Step 6: Final answer
    x = 2,215.69

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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.