Home / 2,160.40-3,240.60-2,038.90

Finding the Fourth Proportional to 2,160.40, 3,240.60 and 2,038.90

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Solution

The fourth proportional to 2,160.40, 3,240.60 and 2,038.90 is: 3,058.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.40 : 3,240.60 = 2,038.90 : x
  2. Step 2: Convert to fraction form
    2,160.40/3,240.60 = 2,038.90/x
  3. Step 3: Cross multiply
    2,160.40x = 3,240.60 × 2,038.90
  4. Step 4: Simplify right side
    2,160.40x = 6,607,259.34
  5. Step 5: Solve for x
    x = 6,607,259.34/2,160.40
  6. Step 6: Final answer
    x = 3,058.35

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1.5x scale

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.