Home / 2,979.51-4,111.08-1,800.57

Finding the Fourth Proportional to 2,979.51, 4,111.08 and 1,800.57

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Solution

The fourth proportional to 2,979.51, 4,111.08 and 1,800.57 is: 2,484.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.51 : 4,111.08 = 1,800.57 : x
  2. Step 2: Convert to fraction form
    2,979.51/4,111.08 = 1,800.57/x
  3. Step 3: Cross multiply
    2,979.51x = 4,111.08 × 1,800.57
  4. Step 4: Simplify right side
    2,979.51x = 7,402,287.32
  5. Step 5: Solve for x
    x = 7,402,287.32/2,979.51
  6. Step 6: Final answer
    x = 2,484.40

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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.