Home / 2,148.78-2,970.81-1,653.06

Finding the Fourth Proportional to 2,148.78, 2,970.81 and 1,653.06

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Solution

The fourth proportional to 2,148.78, 2,970.81 and 1,653.06 is: 2,285.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.78 : 2,970.81 = 1,653.06 : x
  2. Step 2: Convert to fraction form
    2,148.78/2,970.81 = 1,653.06/x
  3. Step 3: Cross multiply
    2,148.78x = 2,970.81 × 1,653.06
  4. Step 4: Simplify right side
    2,148.78x = 4,910,927.18
  5. Step 5: Solve for x
    x = 4,910,927.18/2,148.78
  6. Step 6: Final answer
    x = 2,285.45

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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.