Home / 9,878.88-13,632.75-5,402.58

Finding the Fourth Proportional to 9,878.88, 13,632.75 and 5,402.58

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Solution

The fourth proportional to 9,878.88, 13,632.75 and 5,402.58 is: 7,455.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,878.88 : 13,632.75 = 5,402.58 : x
  2. Step 2: Convert to fraction form
    9,878.88/13,632.75 = 5,402.58/x
  3. Step 3: Cross multiply
    9,878.88x = 13,632.75 × 5,402.58
  4. Step 4: Simplify right side
    9,878.88x = 73,652,022.50
  5. Step 5: Solve for x
    x = 73,652,022.50/9,878.88
  6. Step 6: Final answer
    x = 7,455.50

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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.