Home / 7,340.49-10,125.81-4,978.53

Finding the Fourth Proportional to 7,340.49, 10,125.81 and 4,978.53

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Solution

The fourth proportional to 7,340.49, 10,125.81 and 4,978.53 is: 6,867.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,340.49 : 10,125.81 = 4,978.53 : x
  2. Step 2: Convert to fraction form
    7,340.49/10,125.81 = 4,978.53/x
  3. Step 3: Cross multiply
    7,340.49x = 10,125.81 × 4,978.53
  4. Step 4: Simplify right side
    7,340.49x = 50,411,648.86
  5. Step 5: Solve for x
    x = 50,411,648.86/7,340.49
  6. Step 6: Final answer
    x = 6,867.61

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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.