Home / 4,942.55-6,820.88-2,818.40

Finding the Fourth Proportional to 4,942.55, 6,820.88 and 2,818.40

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Solution

The fourth proportional to 4,942.55, 6,820.88 and 2,818.40 is: 3,889.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,942.55 : 6,820.88 = 2,818.40 : x
  2. Step 2: Convert to fraction form
    4,942.55/6,820.88 = 2,818.40/x
  3. Step 3: Cross multiply
    4,942.55x = 6,820.88 × 2,818.40
  4. Step 4: Simplify right side
    4,942.55x = 19,223,941.13
  5. Step 5: Solve for x
    x = 19,223,941.13/4,942.55
  6. Step 6: Final answer
    x = 3,889.48

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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.