Home / 5,117.40-7,676.70-1,830.78

Finding the Fourth Proportional to 5,117.40, 7,676.70 and 1,830.78

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Solution

The fourth proportional to 5,117.40, 7,676.70 and 1,830.78 is: 2,746.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.40 : 7,676.70 = 1,830.78 : x
  2. Step 2: Convert to fraction form
    5,117.40/7,676.70 = 1,830.78/x
  3. Step 3: Cross multiply
    5,117.40x = 7,676.70 × 1,830.78
  4. Step 4: Simplify right side
    5,117.40x = 14,054,348.83
  5. Step 5: Solve for x
    x = 14,054,348.83/5,117.40
  6. Step 6: Final answer
    x = 2,746.38

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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.