Home / 2,421.68-3,341.94-1,490

Finding the Fourth Proportional to 2,421.68, 3,341.94 and 1,490

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Solution

The fourth proportional to 2,421.68, 3,341.94 and 1,490 is: 2,056.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.68 : 3,341.94 = 1,490 : x
  2. Step 2: Convert to fraction form
    2,421.68/3,341.94 = 1,490/x
  3. Step 3: Cross multiply
    2,421.68x = 3,341.94 × 1,490
  4. Step 4: Simplify right side
    2,421.68x = 4,979,490.60
  5. Step 5: Solve for x
    x = 4,979,490.60/2,421.68
  6. Step 6: Final answer
    x = 2,056.21

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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.