Home / 9,113.34-12,577.35-5,578.90

Finding the Fourth Proportional to 9,113.34, 12,577.35 and 5,578.90

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Solution

The fourth proportional to 9,113.34, 12,577.35 and 5,578.90 is: 7,699.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,113.34 : 12,577.35 = 5,578.90 : x
  2. Step 2: Convert to fraction form
    9,113.34/12,577.35 = 5,578.90/x
  3. Step 3: Cross multiply
    9,113.34x = 12,577.35 × 5,578.90
  4. Step 4: Simplify right side
    9,113.34x = 70,167,777.92
  5. Step 5: Solve for x
    x = 70,167,777.92/9,113.34
  6. Step 6: Final answer
    x = 7,699.46

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Half scale
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Double scale
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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.