Home / 1,538.15-2,307.65-1,019.66

Finding the Fourth Proportional to 1,538.15, 2,307.65 and 1,019.66

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Solution

The fourth proportional to 1,538.15, 2,307.65 and 1,019.66 is: 1,529.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.15 : 2,307.65 = 1,019.66 : x
  2. Step 2: Convert to fraction form
    1,538.15/2,307.65 = 1,019.66/x
  3. Step 3: Cross multiply
    1,538.15x = 2,307.65 × 1,019.66
  4. Step 4: Simplify right side
    1,538.15x = 2,353,001.76
  5. Step 5: Solve for x
    x = 2,353,001.76/1,538.15
  6. Step 6: Final answer
    x = 1,529.77

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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.