Home / 3,013.72-4,159.09-1,687.35

Finding the Fourth Proportional to 3,013.72, 4,159.09 and 1,687.35

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Solution

The fourth proportional to 3,013.72, 4,159.09 and 1,687.35 is: 2,328.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,013.72 : 4,159.09 = 1,687.35 : x
  2. Step 2: Convert to fraction form
    3,013.72/4,159.09 = 1,687.35/x
  3. Step 3: Cross multiply
    3,013.72x = 4,159.09 × 1,687.35
  4. Step 4: Simplify right side
    3,013.72x = 7,017,840.51
  5. Step 5: Solve for x
    x = 7,017,840.51/3,013.72
  6. Step 6: Final answer
    x = 2,328.63

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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.