Home / 2,490.37-3,438.18-2,213.58

Finding the Fourth Proportional to 2,490.37, 3,438.18 and 2,213.58

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Solution

The fourth proportional to 2,490.37, 3,438.18 and 2,213.58 is: 3,056.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.37 : 3,438.18 = 2,213.58 : x
  2. Step 2: Convert to fraction form
    2,490.37/3,438.18 = 2,213.58/x
  3. Step 3: Cross multiply
    2,490.37x = 3,438.18 × 2,213.58
  4. Step 4: Simplify right side
    2,490.37x = 7,610,686.48
  5. Step 5: Solve for x
    x = 7,610,686.48/2,490.37
  6. Step 6: Final answer
    x = 3,056.05

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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.