Home / 9,883.04-13,638.39-5,406.78

Finding the Fourth Proportional to 9,883.04, 13,638.39 and 5,406.78

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Solution

The fourth proportional to 9,883.04, 13,638.39 and 5,406.78 is: 7,461.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,883.04 : 13,638.39 = 5,406.78 : x
  2. Step 2: Convert to fraction form
    9,883.04/13,638.39 = 5,406.78/x
  3. Step 3: Cross multiply
    9,883.04x = 13,638.39 × 5,406.78
  4. Step 4: Simplify right side
    9,883.04x = 73,739,774.28
  5. Step 5: Solve for x
    x = 73,739,774.28/9,883.04
  6. Step 6: Final answer
    x = 7,461.24

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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.