Home / 2,571.90-3,547.56-1,686.78

Finding the Fourth Proportional to 2,571.90, 3,547.56 and 1,686.78

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Solution

The fourth proportional to 2,571.90, 3,547.56 and 1,686.78 is: 2,326.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,571.90 : 3,547.56 = 1,686.78 : x
  2. Step 2: Convert to fraction form
    2,571.90/3,547.56 = 1,686.78/x
  3. Step 3: Cross multiply
    2,571.90x = 3,547.56 × 1,686.78
  4. Step 4: Simplify right side
    2,571.90x = 5,983,953.26
  5. Step 5: Solve for x
    x = 5,983,953.26/2,571.90
  6. Step 6: Final answer
    x = 2,326.67

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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.