Home / 1,676.64-2,314.72-1,117.88

Finding the Fourth Proportional to 1,676.64, 2,314.72 and 1,117.88

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Solution

The fourth proportional to 1,676.64, 2,314.72 and 1,117.88 is: 1,543.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,676.64 : 2,314.72 = 1,117.88 : x
  2. Step 2: Convert to fraction form
    1,676.64/2,314.72 = 1,117.88/x
  3. Step 3: Cross multiply
    1,676.64x = 2,314.72 × 1,117.88
  4. Step 4: Simplify right side
    1,676.64x = 2,587,579.19
  5. Step 5: Solve for x
    x = 2,587,579.19/1,676.64
  6. Step 6: Final answer
    x = 1,543.31

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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.