Home / 2,547.47-3,515.60-1,428.46

Finding the Fourth Proportional to 2,547.47, 3,515.60 and 1,428.46

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Solution

The fourth proportional to 2,547.47, 3,515.60 and 1,428.46 is: 1,971.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,547.47 : 3,515.60 = 1,428.46 : x
  2. Step 2: Convert to fraction form
    2,547.47/3,515.60 = 1,428.46/x
  3. Step 3: Cross multiply
    2,547.47x = 3,515.60 × 1,428.46
  4. Step 4: Simplify right side
    2,547.47x = 5,021,893.98
  5. Step 5: Solve for x
    x = 5,021,893.98/2,547.47
  6. Step 6: Final answer
    x = 1,971.33

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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.