Home / 2,547.51-3,515.77-1,428.56

Finding the Fourth Proportional to 2,547.51, 3,515.77 and 1,428.56

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Solution

The fourth proportional to 2,547.51, 3,515.77 and 1,428.56 is: 1,971.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,547.51 : 3,515.77 = 1,428.56 : x
  2. Step 2: Convert to fraction form
    2,547.51/3,515.77 = 1,428.56/x
  3. Step 3: Cross multiply
    2,547.51x = 3,515.77 × 1,428.56
  4. Step 4: Simplify right side
    2,547.51x = 5,022,476.44
  5. Step 5: Solve for x
    x = 5,022,476.44/2,547.51
  6. Step 6: Final answer
    x = 1,971.52

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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.