Home / 7,182.78-9,911.16-4,038.36

Finding the Fourth Proportional to 7,182.78, 9,911.16 and 4,038.36

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Solution

The fourth proportional to 7,182.78, 9,911.16 and 4,038.36 is: 5,572.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182.78 : 9,911.16 = 4,038.36 : x
  2. Step 2: Convert to fraction form
    7,182.78/9,911.16 = 4,038.36/x
  3. Step 3: Cross multiply
    7,182.78x = 9,911.16 × 4,038.36
  4. Step 4: Simplify right side
    7,182.78x = 40,024,832.10
  5. Step 5: Solve for x
    x = 40,024,832.10/7,182.78
  6. Step 6: Final answer
    x = 5,572.33

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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.