Home / 7,128.84-10,683.54-4,356.48

Finding the Fourth Proportional to 7,128.84, 10,683.54 and 4,356.48

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Solution

The fourth proportional to 7,128.84, 10,683.54 and 4,356.48 is: 6,528.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.84 : 10,683.54 = 4,356.48 : x
  2. Step 2: Convert to fraction form
    7,128.84/10,683.54 = 4,356.48/x
  3. Step 3: Cross multiply
    7,128.84x = 10,683.54 × 4,356.48
  4. Step 4: Simplify right side
    7,128.84x = 46,542,628.34
  5. Step 5: Solve for x
    x = 46,542,628.34/7,128.84
  6. Step 6: Final answer
    x = 6,528.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.