Home / 1,609.40-2,417.70-1,543.80

Finding the Fourth Proportional to 1,609.40, 2,417.70 and 1,543.80

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Solution

The fourth proportional to 1,609.40, 2,417.70 and 1,543.80 is: 2,319.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.40 : 2,417.70 = 1,543.80 : x
  2. Step 2: Convert to fraction form
    1,609.40/2,417.70 = 1,543.80/x
  3. Step 3: Cross multiply
    1,609.40x = 2,417.70 × 1,543.80
  4. Step 4: Simplify right side
    1,609.40x = 3,732,445.26
  5. Step 5: Solve for x
    x = 3,732,445.26/1,609.40
  6. Step 6: Final answer
    x = 2,319.15

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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.