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Finding the Fourth Proportional to 1,435.04, 1,979.76 and 968.48

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Solution

The fourth proportional to 1,435.04, 1,979.76 and 968.48 is: 1,336.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.04 : 1,979.76 = 968.48 : x
  2. Step 2: Convert to fraction form
    1,435.04/1,979.76 = 968.48/x
  3. Step 3: Cross multiply
    1,435.04x = 1,979.76 × 968.48
  4. Step 4: Simplify right side
    1,435.04x = 1,917,357.96
  5. Step 5: Solve for x
    x = 1,917,357.96/1,435.04
  6. Step 6: Final answer
    x = 1,336.10

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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.