Home / 4,211.95-6,318.74-1,290.28

Finding the Fourth Proportional to 4,211.95, 6,318.74 and 1,290.28

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Solution

The fourth proportional to 4,211.95, 6,318.74 and 1,290.28 is: 1,935.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,211.95 : 6,318.74 = 1,290.28 : x
  2. Step 2: Convert to fraction form
    4,211.95/6,318.74 = 1,290.28/x
  3. Step 3: Cross multiply
    4,211.95x = 6,318.74 × 1,290.28
  4. Step 4: Simplify right side
    4,211.95x = 8,152,937.40
  5. Step 5: Solve for x
    x = 8,152,937.40/4,211.95
  6. Step 6: Final answer
    x = 1,935.67

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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.