Home / 5,475.40-8,210.70-2,187.40

Finding the Fourth Proportional to 5,475.40, 8,210.70 and 2,187.40

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Solution

The fourth proportional to 5,475.40, 8,210.70 and 2,187.40 is: 3,280.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,475.40 : 8,210.70 = 2,187.40 : x
  2. Step 2: Convert to fraction form
    5,475.40/8,210.70 = 2,187.40/x
  3. Step 3: Cross multiply
    5,475.40x = 8,210.70 × 2,187.40
  4. Step 4: Simplify right side
    5,475.40x = 17,960,085.18
  5. Step 5: Solve for x
    x = 17,960,085.18/5,475.40
  6. Step 6: Final answer
    x = 3,280.14

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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.