Home / 1,715.24-2,365.14-1,321.40

Finding the Fourth Proportional to 1,715.24, 2,365.14 and 1,321.40

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Solution

The fourth proportional to 1,715.24, 2,365.14 and 1,321.40 is: 1,822.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.24 : 2,365.14 = 1,321.40 : x
  2. Step 2: Convert to fraction form
    1,715.24/2,365.14 = 1,321.40/x
  3. Step 3: Cross multiply
    1,715.24x = 2,365.14 × 1,321.40
  4. Step 4: Simplify right side
    1,715.24x = 3,125,296.00
  5. Step 5: Solve for x
    x = 3,125,296.00/1,715.24
  6. Step 6: Final answer
    x = 1,822.08

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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.