Home / 2,579.79-3,560.40-2,421.45

Finding the Fourth Proportional to 2,579.79, 3,560.40 and 2,421.45

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Solution

The fourth proportional to 2,579.79, 3,560.40 and 2,421.45 is: 3,341.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.79 : 3,560.40 = 2,421.45 : x
  2. Step 2: Convert to fraction form
    2,579.79/3,560.40 = 2,421.45/x
  3. Step 3: Cross multiply
    2,579.79x = 3,560.40 × 2,421.45
  4. Step 4: Simplify right side
    2,579.79x = 8,621,330.58
  5. Step 5: Solve for x
    x = 8,621,330.58/2,579.79
  6. Step 6: Final answer
    x = 3,341.87

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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.