Home / 1,698.72-2,343.51-1,173.84

Finding the Fourth Proportional to 1,698.72, 2,343.51 and 1,173.84

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Solution

The fourth proportional to 1,698.72, 2,343.51 and 1,173.84 is: 1,619.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.72 : 2,343.51 = 1,173.84 : x
  2. Step 2: Convert to fraction form
    1,698.72/2,343.51 = 1,173.84/x
  3. Step 3: Cross multiply
    1,698.72x = 2,343.51 × 1,173.84
  4. Step 4: Simplify right side
    1,698.72x = 2,750,905.78
  5. Step 5: Solve for x
    x = 2,750,905.78/1,698.72
  6. Step 6: Final answer
    x = 1,619.40

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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.