Home / 4,689.16-6,469.98-2,800.40

Finding the Fourth Proportional to 4,689.16, 6,469.98 and 2,800.40

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Solution

The fourth proportional to 4,689.16, 6,469.98 and 2,800.40 is: 3,863.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.16 : 6,469.98 = 2,800.40 : x
  2. Step 2: Convert to fraction form
    4,689.16/6,469.98 = 2,800.40/x
  3. Step 3: Cross multiply
    4,689.16x = 6,469.98 × 2,800.40
  4. Step 4: Simplify right side
    4,689.16x = 18,118,499.64
  5. Step 5: Solve for x
    x = 18,118,499.64/4,689.16
  6. Step 6: Final answer
    x = 3,863.92

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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.