Home / 3,385.84-5,078.64-1,045.76

Finding the Fourth Proportional to 3,385.84, 5,078.64 and 1,045.76

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Solution

The fourth proportional to 3,385.84, 5,078.64 and 1,045.76 is: 1,568.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,385.84 : 5,078.64 = 1,045.76 : x
  2. Step 2: Convert to fraction form
    3,385.84/5,078.64 = 1,045.76/x
  3. Step 3: Cross multiply
    3,385.84x = 5,078.64 × 1,045.76
  4. Step 4: Simplify right side
    3,385.84x = 5,311,038.57
  5. Step 5: Solve for x
    x = 5,311,038.57/3,385.84
  6. Step 6: Final answer
    x = 1,568.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.