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Finding the Fourth Proportional to 1,569.96, 2,349.45 and 976.71

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Solution

The fourth proportional to 1,569.96, 2,349.45 and 976.71 is: 1,461.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,569.96 : 2,349.45 = 976.71 : x
  2. Step 2: Convert to fraction form
    1,569.96/2,349.45 = 976.71/x
  3. Step 3: Cross multiply
    1,569.96x = 2,349.45 × 976.71
  4. Step 4: Simplify right side
    1,569.96x = 2,294,731.31
  5. Step 5: Solve for x
    x = 2,294,731.31/1,569.96
  6. Step 6: Final answer
    x = 1,461.65

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1.5x scale

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.