Home / 5,439.69-8,156.53-1,690.45

Finding the Fourth Proportional to 5,439.69, 8,156.53 and 1,690.45

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Solution

The fourth proportional to 5,439.69, 8,156.53 and 1,690.45 is: 2,534.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.69 : 8,156.53 = 1,690.45 : x
  2. Step 2: Convert to fraction form
    5,439.69/8,156.53 = 1,690.45/x
  3. Step 3: Cross multiply
    5,439.69x = 8,156.53 × 1,690.45
  4. Step 4: Simplify right side
    5,439.69x = 13,788,206.14
  5. Step 5: Solve for x
    x = 13,788,206.14/5,439.69
  6. Step 6: Final answer
    x = 2,534.74

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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.