Home / 2,455.52-3,681.75-811.62

Finding the Fourth Proportional to 2,455.52, 3,681.75 and 811.62

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Solution

The fourth proportional to 2,455.52, 3,681.75 and 811.62 is: 1,216.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.52 : 3,681.75 = 811.62 : x
  2. Step 2: Convert to fraction form
    2,455.52/3,681.75 = 811.62/x
  3. Step 3: Cross multiply
    2,455.52x = 3,681.75 × 811.62
  4. Step 4: Simplify right side
    2,455.52x = 2,988,184.98
  5. Step 5: Solve for x
    x = 2,988,184.98/2,455.52
  6. Step 6: Final answer
    x = 1,216.93

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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.