Home / 1,864.80-2,570.76-1,274.40

Finding the Fourth Proportional to 1,864.80, 2,570.76 and 1,274.40

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Solution

The fourth proportional to 1,864.80, 2,570.76 and 1,274.40 is: 1,756.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.80 : 2,570.76 = 1,274.40 : x
  2. Step 2: Convert to fraction form
    1,864.80/2,570.76 = 1,274.40/x
  3. Step 3: Cross multiply
    1,864.80x = 2,570.76 × 1,274.40
  4. Step 4: Simplify right side
    1,864.80x = 3,276,176.54
  5. Step 5: Solve for x
    x = 3,276,176.54/1,864.80
  6. Step 6: Final answer
    x = 1,756.85

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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.