Home / 4,313.28-6,468.55-1,390.91

Finding the Fourth Proportional to 4,313.28, 6,468.55 and 1,390.91

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Solution

The fourth proportional to 4,313.28, 6,468.55 and 1,390.91 is: 2,085.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,313.28 : 6,468.55 = 1,390.91 : x
  2. Step 2: Convert to fraction form
    4,313.28/6,468.55 = 1,390.91/x
  3. Step 3: Cross multiply
    4,313.28x = 6,468.55 × 1,390.91
  4. Step 4: Simplify right side
    4,313.28x = 8,997,135.06
  5. Step 5: Solve for x
    x = 8,997,135.06/4,313.28
  6. Step 6: Final answer
    x = 2,085.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.