Home / 1,434.60-1,980.54-1,015.56

Finding the Fourth Proportional to 1,434.60, 1,980.54 and 1,015.56

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Solution

The fourth proportional to 1,434.60, 1,980.54 and 1,015.56 is: 1,402.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.60 : 1,980.54 = 1,015.56 : x
  2. Step 2: Convert to fraction form
    1,434.60/1,980.54 = 1,015.56/x
  3. Step 3: Cross multiply
    1,434.60x = 1,980.54 × 1,015.56
  4. Step 4: Simplify right side
    1,434.60x = 2,011,357.20
  5. Step 5: Solve for x
    x = 2,011,357.20/1,434.60
  6. Step 6: Final answer
    x = 1,402.03

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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.