Home / 4,622.45-6,931.86-1,990.16

Finding the Fourth Proportional to 4,622.45, 6,931.86 and 1,990.16

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Solution

The fourth proportional to 4,622.45, 6,931.86 and 1,990.16 is: 2,984.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,622.45 : 6,931.86 = 1,990.16 : x
  2. Step 2: Convert to fraction form
    4,622.45/6,931.86 = 1,990.16/x
  3. Step 3: Cross multiply
    4,622.45x = 6,931.86 × 1,990.16
  4. Step 4: Simplify right side
    4,622.45x = 13,795,468.38
  5. Step 5: Solve for x
    x = 13,795,468.38/4,622.45
  6. Step 6: Final answer
    x = 2,984.45

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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.