Home / 5,390.62-8,075.70-2,613.40

Finding the Fourth Proportional to 5,390.62, 8,075.70 and 2,613.40

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Solution

The fourth proportional to 5,390.62, 8,075.70 and 2,613.40 is: 3,915.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.62 : 8,075.70 = 2,613.40 : x
  2. Step 2: Convert to fraction form
    5,390.62/8,075.70 = 2,613.40/x
  3. Step 3: Cross multiply
    5,390.62x = 8,075.70 × 2,613.40
  4. Step 4: Simplify right side
    5,390.62x = 21,105,014.19
  5. Step 5: Solve for x
    x = 21,105,014.19/5,390.62
  6. Step 6: Final answer
    x = 3,915.14

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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.