Home / 7,857.74-10,840.03-4,872.49

Finding the Fourth Proportional to 7,857.74, 10,840.03 and 4,872.49

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Solution

The fourth proportional to 7,857.74, 10,840.03 and 4,872.49 is: 6,721.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.74 : 10,840.03 = 4,872.49 : x
  2. Step 2: Convert to fraction form
    7,857.74/10,840.03 = 4,872.49/x
  3. Step 3: Cross multiply
    7,857.74x = 10,840.03 × 4,872.49
  4. Step 4: Simplify right side
    7,857.74x = 52,817,898.49
  5. Step 5: Solve for x
    x = 52,817,898.49/7,857.74
  6. Step 6: Final answer
    x = 6,721.76

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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.