Home / 6,638.78-9,143.75-4,957.52

Finding the Fourth Proportional to 6,638.78, 9,143.75 and 4,957.52

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Solution

The fourth proportional to 6,638.78, 9,143.75 and 4,957.52 is: 6,828.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.78 : 9,143.75 = 4,957.52 : x
  2. Step 2: Convert to fraction form
    6,638.78/9,143.75 = 4,957.52/x
  3. Step 3: Cross multiply
    6,638.78x = 9,143.75 × 4,957.52
  4. Step 4: Simplify right side
    6,638.78x = 45,330,341.61
  5. Step 5: Solve for x
    x = 45,330,341.61/6,638.78
  6. Step 6: Final answer
    x = 6,828.12

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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.