Home / 1,430.70-2,146.05-943.64

Finding the Fourth Proportional to 1,430.70, 2,146.05 and 943.64

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Solution

The fourth proportional to 1,430.70, 2,146.05 and 943.64 is: 1,415.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.70 : 2,146.05 = 943.64 : x
  2. Step 2: Convert to fraction form
    1,430.70/2,146.05 = 943.64/x
  3. Step 3: Cross multiply
    1,430.70x = 2,146.05 × 943.64
  4. Step 4: Simplify right side
    1,430.70x = 2,025,087.89
  5. Step 5: Solve for x
    x = 2,025,087.89/1,430.70
  6. Step 6: Final answer
    x = 1,415.45

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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.