Home / 7,490.42-11,235.90-2,809.95

Finding the Fourth Proportional to 7,490.42, 11,235.90 and 2,809.95

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Solution

The fourth proportional to 7,490.42, 11,235.90 and 2,809.95 is: 4,215.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,490.42 : 11,235.90 = 2,809.95 : x
  2. Step 2: Convert to fraction form
    7,490.42/11,235.90 = 2,809.95/x
  3. Step 3: Cross multiply
    7,490.42x = 11,235.90 × 2,809.95
  4. Step 4: Simplify right side
    7,490.42x = 31,572,317.21
  5. Step 5: Solve for x
    x = 31,572,317.21/7,490.42
  6. Step 6: Final answer
    x = 4,215.03

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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.