Home / 3,530.40-4,871.36-2,113.76

Finding the Fourth Proportional to 3,530.40, 4,871.36 and 2,113.76

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Solution

The fourth proportional to 3,530.40, 4,871.36 and 2,113.76 is: 2,916.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,530.40 : 4,871.36 = 2,113.76 : x
  2. Step 2: Convert to fraction form
    3,530.40/4,871.36 = 2,113.76/x
  3. Step 3: Cross multiply
    3,530.40x = 4,871.36 × 2,113.76
  4. Step 4: Simplify right side
    3,530.40x = 10,296,885.91
  5. Step 5: Solve for x
    x = 10,296,885.91/3,530.40
  6. Step 6: Final answer
    x = 2,916.63

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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.