Home / 1,422.36-1,962.63-1,029.51

Finding the Fourth Proportional to 1,422.36, 1,962.63 and 1,029.51

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Solution

The fourth proportional to 1,422.36, 1,962.63 and 1,029.51 is: 1,420.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.36 : 1,962.63 = 1,029.51 : x
  2. Step 2: Convert to fraction form
    1,422.36/1,962.63 = 1,029.51/x
  3. Step 3: Cross multiply
    1,422.36x = 1,962.63 × 1,029.51
  4. Step 4: Simplify right side
    1,422.36x = 2,020,547.21
  5. Step 5: Solve for x
    x = 2,020,547.21/1,422.36
  6. Step 6: Final answer
    x = 1,420.56

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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.