Home / 4,206.40-6,309.90-1,284.70

Finding the Fourth Proportional to 4,206.40, 6,309.90 and 1,284.70

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Solution

The fourth proportional to 4,206.40, 6,309.90 and 1,284.70 is: 1,927.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,206.40 : 6,309.90 = 1,284.70 : x
  2. Step 2: Convert to fraction form
    4,206.40/6,309.90 = 1,284.70/x
  3. Step 3: Cross multiply
    4,206.40x = 6,309.90 × 1,284.70
  4. Step 4: Simplify right side
    4,206.40x = 8,106,328.53
  5. Step 5: Solve for x
    x = 8,106,328.53/4,206.40
  6. Step 6: Final answer
    x = 1,927.14

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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.