Home / 1,285.60-1,925.70-1,010.38

Finding the Fourth Proportional to 1,285.60, 1,925.70 and 1,010.38

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Solution

The fourth proportional to 1,285.60, 1,925.70 and 1,010.38 is: 1,513.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.60 : 1,925.70 = 1,010.38 : x
  2. Step 2: Convert to fraction form
    1,285.60/1,925.70 = 1,010.38/x
  3. Step 3: Cross multiply
    1,285.60x = 1,925.70 × 1,010.38
  4. Step 4: Simplify right side
    1,285.60x = 1,945,688.77
  5. Step 5: Solve for x
    x = 1,945,688.77/1,285.60
  6. Step 6: Final answer
    x = 1,513.45

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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.