Home / 1,717.16-2,365.67-1,421.51

Finding the Fourth Proportional to 1,717.16, 2,365.67 and 1,421.51

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Solution

The fourth proportional to 1,717.16, 2,365.67 and 1,421.51 is: 1,958.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.16 : 2,365.67 = 1,421.51 : x
  2. Step 2: Convert to fraction form
    1,717.16/2,365.67 = 1,421.51/x
  3. Step 3: Cross multiply
    1,717.16x = 2,365.67 × 1,421.51
  4. Step 4: Simplify right side
    1,717.16x = 3,362,815.29
  5. Step 5: Solve for x
    x = 3,362,815.29/1,717.16
  6. Step 6: Final answer
    x = 1,958.36

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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.