Home / 3,480.51-4,802.80-1,988.13

Finding the Fourth Proportional to 3,480.51, 4,802.80 and 1,988.13

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Solution

The fourth proportional to 3,480.51, 4,802.80 and 1,988.13 is: 2,743.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.51 : 4,802.80 = 1,988.13 : x
  2. Step 2: Convert to fraction form
    3,480.51/4,802.80 = 1,988.13/x
  3. Step 3: Cross multiply
    3,480.51x = 4,802.80 × 1,988.13
  4. Step 4: Simplify right side
    3,480.51x = 9,548,590.76
  5. Step 5: Solve for x
    x = 9,548,590.76/3,480.51
  6. Step 6: Final answer
    x = 2,743.45

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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.