Home / 2,979.48-4,111.60-1,653.18

Finding the Fourth Proportional to 2,979.48, 4,111.60 and 1,653.18

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Solution

The fourth proportional to 2,979.48, 4,111.60 and 1,653.18 is: 2,281.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.48 : 4,111.60 = 1,653.18 : x
  2. Step 2: Convert to fraction form
    2,979.48/4,111.60 = 1,653.18/x
  3. Step 3: Cross multiply
    2,979.48x = 4,111.60 × 1,653.18
  4. Step 4: Simplify right side
    2,979.48x = 6,797,214.89
  5. Step 5: Solve for x
    x = 6,797,214.89/2,979.48
  6. Step 6: Final answer
    x = 2,281.34

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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.