Home / 2,570.79-3,547.67-1,391.84

Finding the Fourth Proportional to 2,570.79, 3,547.67 and 1,391.84

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Solution

The fourth proportional to 2,570.79, 3,547.67 and 1,391.84 is: 1,920.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,570.79 : 3,547.67 = 1,391.84 : x
  2. Step 2: Convert to fraction form
    2,570.79/3,547.67 = 1,391.84/x
  3. Step 3: Cross multiply
    2,570.79x = 3,547.67 × 1,391.84
  4. Step 4: Simplify right side
    2,570.79x = 4,937,764.32
  5. Step 5: Solve for x
    x = 4,937,764.32/2,570.79
  6. Step 6: Final answer
    x = 1,920.72

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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.