Home / 1,022.76-1,409.40-973.62

Finding the Fourth Proportional to 1,022.76, 1,409.40 and 973.62

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Solution

The fourth proportional to 1,022.76, 1,409.40 and 973.62 is: 1,341.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,022.76 : 1,409.40 = 973.62 : x
  2. Step 2: Convert to fraction form
    1,022.76/1,409.40 = 973.62/x
  3. Step 3: Cross multiply
    1,022.76x = 1,409.40 × 973.62
  4. Step 4: Simplify right side
    1,022.76x = 1,372,220.03
  5. Step 5: Solve for x
    x = 1,372,220.03/1,022.76
  6. Step 6: Final answer
    x = 1,341.68

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.