Home / 1,988.21-2,740.56-1,483.83

Finding the Fourth Proportional to 1,988.21, 2,740.56 and 1,483.83

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Solution

The fourth proportional to 1,988.21, 2,740.56 and 1,483.83 is: 2,045.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.21 : 2,740.56 = 1,483.83 : x
  2. Step 2: Convert to fraction form
    1,988.21/2,740.56 = 1,483.83/x
  3. Step 3: Cross multiply
    1,988.21x = 2,740.56 × 1,483.83
  4. Step 4: Simplify right side
    1,988.21x = 4,066,525.14
  5. Step 5: Solve for x
    x = 4,066,525.14/1,988.21
  6. Step 6: Final answer
    x = 2,045.32

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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.