Home / 4,239.97-6,312.47-4,219.45

Finding the Fourth Proportional to 4,239.97, 6,312.47 and 4,219.45

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Solution

The fourth proportional to 4,239.97, 6,312.47 and 4,219.45 is: 6,281.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,239.97 : 6,312.47 = 4,219.45 : x
  2. Step 2: Convert to fraction form
    4,239.97/6,312.47 = 4,219.45/x
  3. Step 3: Cross multiply
    4,239.97x = 6,312.47 × 4,219.45
  4. Step 4: Simplify right side
    4,239.97x = 26,635,114.66
  5. Step 5: Solve for x
    x = 26,635,114.66/4,239.97
  6. Step 6: Final answer
    x = 6,281.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.