Home / 1,539.87-2,320.17-1,271.94

Finding the Fourth Proportional to 1,539.87, 2,320.17 and 1,271.94

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Solution

The fourth proportional to 1,539.87, 2,320.17 and 1,271.94 is: 1,916.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.87 : 2,320.17 = 1,271.94 : x
  2. Step 2: Convert to fraction form
    1,539.87/2,320.17 = 1,271.94/x
  3. Step 3: Cross multiply
    1,539.87x = 2,320.17 × 1,271.94
  4. Step 4: Simplify right side
    1,539.87x = 2,951,117.03
  5. Step 5: Solve for x
    x = 2,951,117.03/1,539.87
  6. Step 6: Final answer
    x = 1,916.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.