Home / 5,106.45-7,045.65-3,116.28

Finding the Fourth Proportional to 5,106.45, 7,045.65 and 3,116.28

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Solution

The fourth proportional to 5,106.45, 7,045.65 and 3,116.28 is: 4,299.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,106.45 : 7,045.65 = 3,116.28 : x
  2. Step 2: Convert to fraction form
    5,106.45/7,045.65 = 3,116.28/x
  3. Step 3: Cross multiply
    5,106.45x = 7,045.65 × 3,116.28
  4. Step 4: Simplify right side
    5,106.45x = 21,956,218.18
  5. Step 5: Solve for x
    x = 21,956,218.18/5,106.45
  6. Step 6: Final answer
    x = 4,299.70

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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.