Home / 9,128.78-13,692.10-2,555.48

Finding the Fourth Proportional to 9,128.78, 13,692.10 and 2,555.48

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Solution

The fourth proportional to 9,128.78, 13,692.10 and 2,555.48 is: 3,832.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.78 : 13,692.10 = 2,555.48 : x
  2. Step 2: Convert to fraction form
    9,128.78/13,692.10 = 2,555.48/x
  3. Step 3: Cross multiply
    9,128.78x = 13,692.10 × 2,555.48
  4. Step 4: Simplify right side
    9,128.78x = 34,989,887.71
  5. Step 5: Solve for x
    x = 34,989,887.71/9,128.78
  6. Step 6: Final answer
    x = 3,832.92

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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.