Home / 2,421.36-3,342.12-1,490.64

Finding the Fourth Proportional to 2,421.36, 3,342.12 and 1,490.64

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Solution

The fourth proportional to 2,421.36, 3,342.12 and 1,490.64 is: 2,057.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.36 : 3,342.12 = 1,490.64 : x
  2. Step 2: Convert to fraction form
    2,421.36/3,342.12 = 1,490.64/x
  3. Step 3: Cross multiply
    2,421.36x = 3,342.12 × 1,490.64
  4. Step 4: Simplify right side
    2,421.36x = 4,981,897.76
  5. Step 5: Solve for x
    x = 4,981,897.76/2,421.36
  6. Step 6: Final answer
    x = 2,057.48

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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.