Home / 4,631.72-6,390.18-2,640.84

Finding the Fourth Proportional to 4,631.72, 6,390.18 and 2,640.84

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Solution

The fourth proportional to 4,631.72, 6,390.18 and 2,640.84 is: 3,643.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,631.72 : 6,390.18 = 2,640.84 : x
  2. Step 2: Convert to fraction form
    4,631.72/6,390.18 = 2,640.84/x
  3. Step 3: Cross multiply
    4,631.72x = 6,390.18 × 2,640.84
  4. Step 4: Simplify right side
    4,631.72x = 16,875,442.95
  5. Step 5: Solve for x
    x = 16,875,442.95/4,631.72
  6. Step 6: Final answer
    x = 3,643.45

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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.