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Finding the Fourth Proportional to 1,979.76, 2,970.15 and 593.10

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Solution

The fourth proportional to 1,979.76, 2,970.15 and 593.10 is: 889.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.76 : 2,970.15 = 593.10 : x
  2. Step 2: Convert to fraction form
    1,979.76/2,970.15 = 593.10/x
  3. Step 3: Cross multiply
    1,979.76x = 2,970.15 × 593.10
  4. Step 4: Simplify right side
    1,979.76x = 1,761,593.74
  5. Step 5: Solve for x
    x = 1,761,593.74/1,979.76
  6. Step 6: Final answer
    x = 889.80

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Double scale
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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.