Home / 2,570.86-3,547.78-1,391.93

Finding the Fourth Proportional to 2,570.86, 3,547.78 and 1,391.93

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Solution

The fourth proportional to 2,570.86, 3,547.78 and 1,391.93 is: 1,920.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,570.86 : 3,547.78 = 1,391.93 : x
  2. Step 2: Convert to fraction form
    2,570.86/3,547.78 = 1,391.93/x
  3. Step 3: Cross multiply
    2,570.86x = 3,547.78 × 1,391.93
  4. Step 4: Simplify right side
    2,570.86x = 4,938,240.20
  5. Step 5: Solve for x
    x = 4,938,240.20/2,570.86
  6. Step 6: Final answer
    x = 1,920.85

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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.