Home / 5,412.69-8,120.48-1,715.00

Finding the Fourth Proportional to 5,412.69, 8,120.48 and 1,715.00

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Solution

The fourth proportional to 5,412.69, 8,120.48 and 1,715.00 is: 2,572.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.69 : 8,120.48 = 1,715.00 : x
  2. Step 2: Convert to fraction form
    5,412.69/8,120.48 = 1,715.00/x
  3. Step 3: Cross multiply
    5,412.69x = 8,120.48 × 1,715.00
  4. Step 4: Simplify right side
    5,412.69x = 13,926,574.02
  5. Step 5: Solve for x
    x = 13,926,574.02/5,412.69
  6. Step 6: Final answer
    x = 2,572.95

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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.