Home / 1,721.69-2,374.63-1,191.46

Finding the Fourth Proportional to 1,721.69, 2,374.63 and 1,191.46

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Solution

The fourth proportional to 1,721.69, 2,374.63 and 1,191.46 is: 1,643.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.69 : 2,374.63 = 1,191.46 : x
  2. Step 2: Convert to fraction form
    1,721.69/2,374.63 = 1,191.46/x
  3. Step 3: Cross multiply
    1,721.69x = 2,374.63 × 1,191.46
  4. Step 4: Simplify right side
    1,721.69x = 2,829,276.66
  5. Step 5: Solve for x
    x = 2,829,276.66/1,721.69
  6. Step 6: Final answer
    x = 1,643.31

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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.