Home / 2,928.21-4,038.17-1,749.12

Finding the Fourth Proportional to 2,928.21, 4,038.17 and 1,749.12

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Solution

The fourth proportional to 2,928.21, 4,038.17 and 1,749.12 is: 2,412.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.21 : 4,038.17 = 1,749.12 : x
  2. Step 2: Convert to fraction form
    2,928.21/4,038.17 = 1,749.12/x
  3. Step 3: Cross multiply
    2,928.21x = 4,038.17 × 1,749.12
  4. Step 4: Simplify right side
    2,928.21x = 7,063,235.16
  5. Step 5: Solve for x
    x = 7,063,235.16/2,928.21
  6. Step 6: Final answer
    x = 2,412.13

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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.