Home / 1,417.44-2,124.30-686.01

Finding the Fourth Proportional to 1,417.44, 2,124.30 and 686.01

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Solution

The fourth proportional to 1,417.44, 2,124.30 and 686.01 is: 1,028.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.44 : 2,124.30 = 686.01 : x
  2. Step 2: Convert to fraction form
    1,417.44/2,124.30 = 686.01/x
  3. Step 3: Cross multiply
    1,417.44x = 2,124.30 × 686.01
  4. Step 4: Simplify right side
    1,417.44x = 1,457,291.04
  5. Step 5: Solve for x
    x = 1,457,291.04/1,417.44
  6. Step 6: Final answer
    x = 1,028.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.