Home / 4,665.72-6,440.28-2,989.68

Finding the Fourth Proportional to 4,665.72, 6,440.28 and 2,989.68

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Solution

The fourth proportional to 4,665.72, 6,440.28 and 2,989.68 is: 4,126.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,665.72 : 6,440.28 = 2,989.68 : x
  2. Step 2: Convert to fraction form
    4,665.72/6,440.28 = 2,989.68/x
  3. Step 3: Cross multiply
    4,665.72x = 6,440.28 × 2,989.68
  4. Step 4: Simplify right side
    4,665.72x = 19,254,376.31
  5. Step 5: Solve for x
    x = 19,254,376.31/4,665.72
  6. Step 6: Final answer
    x = 4,126.77

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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.