Home / 1,988.16-2,984.64-1,582.08

Finding the Fourth Proportional to 1,988.16, 2,984.64 and 1,582.08

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Solution

The fourth proportional to 1,988.16, 2,984.64 and 1,582.08 is: 2,375.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.16 : 2,984.64 = 1,582.08 : x
  2. Step 2: Convert to fraction form
    1,988.16/2,984.64 = 1,582.08/x
  3. Step 3: Cross multiply
    1,988.16x = 2,984.64 × 1,582.08
  4. Step 4: Simplify right side
    1,988.16x = 4,721,939.25
  5. Step 5: Solve for x
    x = 4,721,939.25/1,988.16
  6. Step 6: Final answer
    x = 2,375.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.