Home / 1,563.69-2,159.63-1,213.84

Finding the Fourth Proportional to 1,563.69, 2,159.63 and 1,213.84

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Solution

The fourth proportional to 1,563.69, 2,159.63 and 1,213.84 is: 1,676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.69 : 2,159.63 = 1,213.84 : x
  2. Step 2: Convert to fraction form
    1,563.69/2,159.63 = 1,213.84/x
  3. Step 3: Cross multiply
    1,563.69x = 2,159.63 × 1,213.84
  4. Step 4: Simplify right side
    1,563.69x = 2,621,446.46
  5. Step 5: Solve for x
    x = 2,621,446.46/1,563.69
  6. Step 6: Final answer
    x = 1,676.45

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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.