Home / 7,340.51-10,119.98-4,978.55

Finding the Fourth Proportional to 7,340.51, 10,119.98 and 4,978.55

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Solution

The fourth proportional to 7,340.51, 10,119.98 and 4,978.55 is: 6,863.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,340.51 : 10,119.98 = 4,978.55 : x
  2. Step 2: Convert to fraction form
    7,340.51/10,119.98 = 4,978.55/x
  3. Step 3: Cross multiply
    7,340.51x = 10,119.98 × 4,978.55
  4. Step 4: Simplify right side
    7,340.51x = 50,382,750.94
  5. Step 5: Solve for x
    x = 50,382,750.94/7,340.51
  6. Step 6: Final answer
    x = 6,863.66

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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.