Home / 2,570.87-3,547.79-1,391.93

Finding the Fourth Proportional to 2,570.87, 3,547.79 and 1,391.93

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Solution

The fourth proportional to 2,570.87, 3,547.79 and 1,391.93 is: 1,920.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,570.87 : 3,547.79 = 1,391.93 : x
  2. Step 2: Convert to fraction form
    2,570.87/3,547.79 = 1,391.93/x
  3. Step 3: Cross multiply
    2,570.87x = 3,547.79 × 1,391.93
  4. Step 4: Simplify right side
    2,570.87x = 4,938,277.24
  5. Step 5: Solve for x
    x = 4,938,277.24/2,570.87
  6. Step 6: Final answer
    x = 1,920.86

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1.5x scale

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.