Home / 2,570.48-3,547.28-1,391.57

Finding the Fourth Proportional to 2,570.48, 3,547.28 and 1,391.57

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Solution

The fourth proportional to 2,570.48, 3,547.28 and 1,391.57 is: 1,920.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,570.48 : 3,547.28 = 1,391.57 : x
  2. Step 2: Convert to fraction form
    2,570.48/3,547.28 = 1,391.57/x
  3. Step 3: Cross multiply
    2,570.48x = 3,547.28 × 1,391.57
  4. Step 4: Simplify right side
    2,570.48x = 4,936,263.74
  5. Step 5: Solve for x
    x = 4,936,263.74/2,570.48
  6. Step 6: Final answer
    x = 1,920.37

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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.