Home / 1,979.07-2,970.90-1,157.93

Finding the Fourth Proportional to 1,979.07, 2,970.90 and 1,157.93

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Solution

The fourth proportional to 1,979.07, 2,970.90 and 1,157.93 is: 1,738.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.07 : 2,970.90 = 1,157.93 : x
  2. Step 2: Convert to fraction form
    1,979.07/2,970.90 = 1,157.93/x
  3. Step 3: Cross multiply
    1,979.07x = 2,970.90 × 1,157.93
  4. Step 4: Simplify right side
    1,979.07x = 3,440,090.52
  5. Step 5: Solve for x
    x = 3,440,090.52/1,979.07
  6. Step 6: Final answer
    x = 1,738.24

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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.