Home / 1,676.98-2,316.48-1,288.85

Finding the Fourth Proportional to 1,676.98, 2,316.48 and 1,288.85

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Solution

The fourth proportional to 1,676.98, 2,316.48 and 1,288.85 is: 1,780.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,676.98 : 2,316.48 = 1,288.85 : x
  2. Step 2: Convert to fraction form
    1,676.98/2,316.48 = 1,288.85/x
  3. Step 3: Cross multiply
    1,676.98x = 2,316.48 × 1,288.85
  4. Step 4: Simplify right side
    1,676.98x = 2,985,595.25
  5. Step 5: Solve for x
    x = 2,985,595.25/1,676.98
  6. Step 6: Final answer
    x = 1,780.35

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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.