Home / 1,653.70-2,465.96-1,638.90

Finding the Fourth Proportional to 1,653.70, 2,465.96 and 1,638.90

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Solution

The fourth proportional to 1,653.70, 2,465.96 and 1,638.90 is: 2,443.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,653.70 : 2,465.96 = 1,638.90 : x
  2. Step 2: Convert to fraction form
    1,653.70/2,465.96 = 1,638.90/x
  3. Step 3: Cross multiply
    1,653.70x = 2,465.96 × 1,638.90
  4. Step 4: Simplify right side
    1,653.70x = 4,041,461.84
  5. Step 5: Solve for x
    x = 4,041,461.84/1,653.70
  6. Step 6: Final answer
    x = 2,443.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.