Home / 1,971.80-2,957.70-1,539.32

Finding the Fourth Proportional to 1,971.80, 2,957.70 and 1,539.32

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Solution

The fourth proportional to 1,971.80, 2,957.70 and 1,539.32 is: 2,308.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.80 : 2,957.70 = 1,539.32 : x
  2. Step 2: Convert to fraction form
    1,971.80/2,957.70 = 1,539.32/x
  3. Step 3: Cross multiply
    1,971.80x = 2,957.70 × 1,539.32
  4. Step 4: Simplify right side
    1,971.80x = 4,552,846.76
  5. Step 5: Solve for x
    x = 4,552,846.76/1,971.80
  6. Step 6: Final answer
    x = 2,308.98

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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.