Home / 2,390.21-3,299.18-1,646.02

Finding the Fourth Proportional to 2,390.21, 3,299.18 and 1,646.02

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Solution

The fourth proportional to 2,390.21, 3,299.18 and 1,646.02 is: 2,271.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.21 : 3,299.18 = 1,646.02 : x
  2. Step 2: Convert to fraction form
    2,390.21/3,299.18 = 1,646.02/x
  3. Step 3: Cross multiply
    2,390.21x = 3,299.18 × 1,646.02
  4. Step 4: Simplify right side
    2,390.21x = 5,430,521.42
  5. Step 5: Solve for x
    x = 5,430,521.42/2,390.21
  6. Step 6: Final answer
    x = 2,271.99

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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.