Home / 9,145.82-12,621.14-5,368.32

Finding the Fourth Proportional to 9,145.82, 12,621.14 and 5,368.32

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Solution

The fourth proportional to 9,145.82, 12,621.14 and 5,368.32 is: 7,408.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.82 : 12,621.14 = 5,368.32 : x
  2. Step 2: Convert to fraction form
    9,145.82/12,621.14 = 5,368.32/x
  3. Step 3: Cross multiply
    9,145.82x = 12,621.14 × 5,368.32
  4. Step 4: Simplify right side
    9,145.82x = 67,754,291.44
  5. Step 5: Solve for x
    x = 67,754,291.44/9,145.82
  6. Step 6: Final answer
    x = 7,408.22

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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.