Home / 4,639.80-6,404.28-2,870.76

Finding the Fourth Proportional to 4,639.80, 6,404.28 and 2,870.76

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Solution

The fourth proportional to 4,639.80, 6,404.28 and 2,870.76 is: 3,962.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,639.80 : 6,404.28 = 2,870.76 : x
  2. Step 2: Convert to fraction form
    4,639.80/6,404.28 = 2,870.76/x
  3. Step 3: Cross multiply
    4,639.80x = 6,404.28 × 2,870.76
  4. Step 4: Simplify right side
    4,639.80x = 18,385,150.85
  5. Step 5: Solve for x
    x = 18,385,150.85/4,639.80
  6. Step 6: Final answer
    x = 3,962.49

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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.