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Finding the Fourth Proportional to 1,595.16, 2,393.10 and 978.48

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Solution

The fourth proportional to 1,595.16, 2,393.10 and 978.48 is: 1,467.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,595.16 : 2,393.10 = 978.48 : x
  2. Step 2: Convert to fraction form
    1,595.16/2,393.10 = 978.48/x
  3. Step 3: Cross multiply
    1,595.16x = 2,393.10 × 978.48
  4. Step 4: Simplify right side
    1,595.16x = 2,341,600.49
  5. Step 5: Solve for x
    x = 2,341,600.49/1,595.16
  6. Step 6: Final answer
    x = 1,467.94

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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.