Home / 1,315.84-1,968.91-1,055.06

Finding the Fourth Proportional to 1,315.84, 1,968.91 and 1,055.06

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Solution

The fourth proportional to 1,315.84, 1,968.91 and 1,055.06 is: 1,578.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.84 : 1,968.91 = 1,055.06 : x
  2. Step 2: Convert to fraction form
    1,315.84/1,968.91 = 1,055.06/x
  3. Step 3: Cross multiply
    1,315.84x = 1,968.91 × 1,055.06
  4. Step 4: Simplify right side
    1,315.84x = 2,077,318.18
  5. Step 5: Solve for x
    x = 2,077,318.18/1,315.84
  6. Step 6: Final answer
    x = 1,578.70

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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.