Home / 6,465.12-8,921.28-3,670.08

Finding the Fourth Proportional to 6,465.12, 8,921.28 and 3,670.08

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Solution

The fourth proportional to 6,465.12, 8,921.28 and 3,670.08 is: 5,064.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,465.12 : 8,921.28 = 3,670.08 : x
  2. Step 2: Convert to fraction form
    6,465.12/8,921.28 = 3,670.08/x
  3. Step 3: Cross multiply
    6,465.12x = 8,921.28 × 3,670.08
  4. Step 4: Simplify right side
    6,465.12x = 32,741,811.30
  5. Step 5: Solve for x
    x = 32,741,811.30/6,465.12
  6. Step 6: Final answer
    x = 5,064.38

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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.