Home / 1,419.08-2,126.73-802.40

Finding the Fourth Proportional to 1,419.08, 2,126.73 and 802.40

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Solution

The fourth proportional to 1,419.08, 2,126.73 and 802.40 is: 1,202.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419.08 : 2,126.73 = 802.40 : x
  2. Step 2: Convert to fraction form
    1,419.08/2,126.73 = 802.40/x
  3. Step 3: Cross multiply
    1,419.08x = 2,126.73 × 802.40
  4. Step 4: Simplify right side
    1,419.08x = 1,706,488.15
  5. Step 5: Solve for x
    x = 1,706,488.15/1,419.08
  6. Step 6: Final answer
    x = 1,202.53

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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.