Home / 2,405.15-3,606.45-761.27

Finding the Fourth Proportional to 2,405.15, 3,606.45 and 761.27

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Solution

The fourth proportional to 2,405.15, 3,606.45 and 761.27 is: 1,141.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.15 : 3,606.45 = 761.27 : x
  2. Step 2: Convert to fraction form
    2,405.15/3,606.45 = 761.27/x
  3. Step 3: Cross multiply
    2,405.15x = 3,606.45 × 761.27
  4. Step 4: Simplify right side
    2,405.15x = 2,745,482.19
  5. Step 5: Solve for x
    x = 2,745,482.19/2,405.15
  6. Step 6: Final answer
    x = 1,141.50

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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.