Home / 1,612.87-2,419.61-1,065.51

Finding the Fourth Proportional to 1,612.87, 2,419.61 and 1,065.51

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Solution

The fourth proportional to 1,612.87, 2,419.61 and 1,065.51 is: 1,598.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.87 : 2,419.61 = 1,065.51 : x
  2. Step 2: Convert to fraction form
    1,612.87/2,419.61 = 1,065.51/x
  3. Step 3: Cross multiply
    1,612.87x = 2,419.61 × 1,065.51
  4. Step 4: Simplify right side
    1,612.87x = 2,578,113.32
  5. Step 5: Solve for x
    x = 2,578,113.32/1,612.87
  6. Step 6: Final answer
    x = 1,598.47

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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.