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Finding the Fourth Proportional to 4,661.70, 6,431.70 and 2,671.87

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Solution

The fourth proportional to 4,661.70, 6,431.70 and 2,671.87 is: 3,686.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,661.70 : 6,431.70 = 2,671.87 : x
  2. Step 2: Convert to fraction form
    4,661.70/6,431.70 = 2,671.87/x
  3. Step 3: Cross multiply
    4,661.70x = 6,431.70 × 2,671.87
  4. Step 4: Simplify right side
    4,661.70x = 17,184,666.28
  5. Step 5: Solve for x
    x = 17,184,666.28/4,661.70
  6. Step 6: Final answer
    x = 3,686.35

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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.