Home / 3,140.06-4,706.52-1,288.80

Finding the Fourth Proportional to 3,140.06, 4,706.52 and 1,288.80

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Solution

The fourth proportional to 3,140.06, 4,706.52 and 1,288.80 is: 1,931.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.06 : 4,706.52 = 1,288.80 : x
  2. Step 2: Convert to fraction form
    3,140.06/4,706.52 = 1,288.80/x
  3. Step 3: Cross multiply
    3,140.06x = 4,706.52 × 1,288.80
  4. Step 4: Simplify right side
    3,140.06x = 6,065,762.98
  5. Step 5: Solve for x
    x = 6,065,762.98/3,140.06
  6. Step 6: Final answer
    x = 1,931.74

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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.