Home / 9,145.60-12,621.12-5,371.44

Finding the Fourth Proportional to 9,145.60, 12,621.12 and 5,371.44

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Solution

The fourth proportional to 9,145.60, 12,621.12 and 5,371.44 is: 7,412.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.60 : 12,621.12 = 5,371.44 : x
  2. Step 2: Convert to fraction form
    9,145.60/12,621.12 = 5,371.44/x
  3. Step 3: Cross multiply
    9,145.60x = 12,621.12 × 5,371.44
  4. Step 4: Simplify right side
    9,145.60x = 67,793,588.81
  5. Step 5: Solve for x
    x = 67,793,588.81/9,145.60
  6. Step 6: Final answer
    x = 7,412.70

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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.