Home / 7,839.78-10,818.84-4,254.66

Finding the Fourth Proportional to 7,839.78, 10,818.84 and 4,254.66

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Solution

The fourth proportional to 7,839.78, 10,818.84 and 4,254.66 is: 5,871.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839.78 : 10,818.84 = 4,254.66 : x
  2. Step 2: Convert to fraction form
    7,839.78/10,818.84 = 4,254.66/x
  3. Step 3: Cross multiply
    7,839.78x = 10,818.84 × 4,254.66
  4. Step 4: Simplify right side
    7,839.78x = 46,030,485.79
  5. Step 5: Solve for x
    x = 46,030,485.79/7,839.78
  6. Step 6: Final answer
    x = 5,871.40

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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.