Home / 9,403.64-12,979.88-5,427.35

Finding the Fourth Proportional to 9,403.64, 12,979.88 and 5,427.35

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Solution

The fourth proportional to 9,403.64, 12,979.88 and 5,427.35 is: 7,491.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,403.64 : 12,979.88 = 5,427.35 : x
  2. Step 2: Convert to fraction form
    9,403.64/12,979.88 = 5,427.35/x
  3. Step 3: Cross multiply
    9,403.64x = 12,979.88 × 5,427.35
  4. Step 4: Simplify right side
    9,403.64x = 70,446,259.68
  5. Step 5: Solve for x
    x = 70,446,259.68/9,403.64
  6. Step 6: Final answer
    x = 7,491.39

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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.