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Finding the Fourth Proportional to 1,798.79, 2,478.08 and 1,715.75

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Solution

The fourth proportional to 1,798.79, 2,478.08 and 1,715.75 is: 2,363.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,798.79 : 2,478.08 = 1,715.75 : x
  2. Step 2: Convert to fraction form
    1,798.79/2,478.08 = 1,715.75/x
  3. Step 3: Cross multiply
    1,798.79x = 2,478.08 × 1,715.75
  4. Step 4: Simplify right side
    1,798.79x = 4,251,757.18
  5. Step 5: Solve for x
    x = 4,251,757.18/1,798.79
  6. Step 6: Final answer
    x = 2,363.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.