Home / 4,272.63-6,407.55-1,639.99

Finding the Fourth Proportional to 4,272.63, 6,407.55 and 1,639.99

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Solution

The fourth proportional to 4,272.63, 6,407.55 and 1,639.99 is: 2,459.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,272.63 : 6,407.55 = 1,639.99 : x
  2. Step 2: Convert to fraction form
    4,272.63/6,407.55 = 1,639.99/x
  3. Step 3: Cross multiply
    4,272.63x = 6,407.55 × 1,639.99
  4. Step 4: Simplify right side
    4,272.63x = 10,508,317.92
  5. Step 5: Solve for x
    x = 10,508,317.92/4,272.63
  6. Step 6: Final answer
    x = 2,459.45

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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.