Home / 1,715.76-2,365.33-1,218.22

Finding the Fourth Proportional to 1,715.76, 2,365.33 and 1,218.22

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Solution

The fourth proportional to 1,715.76, 2,365.33 and 1,218.22 is: 1,679.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.76 : 2,365.33 = 1,218.22 : x
  2. Step 2: Convert to fraction form
    1,715.76/2,365.33 = 1,218.22/x
  3. Step 3: Cross multiply
    1,715.76x = 2,365.33 × 1,218.22
  4. Step 4: Simplify right side
    1,715.76x = 2,881,492.31
  5. Step 5: Solve for x
    x = 2,881,492.31/1,715.76
  6. Step 6: Final answer
    x = 1,679.43

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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.