Home / 3,557.47-4,909.32-1,985.67

Finding the Fourth Proportional to 3,557.47, 4,909.32 and 1,985.67

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Solution

The fourth proportional to 3,557.47, 4,909.32 and 1,985.67 is: 2,740.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.47 : 4,909.32 = 1,985.67 : x
  2. Step 2: Convert to fraction form
    3,557.47/4,909.32 = 1,985.67/x
  3. Step 3: Cross multiply
    3,557.47x = 4,909.32 × 1,985.67
  4. Step 4: Simplify right side
    3,557.47x = 9,748,289.44
  5. Step 5: Solve for x
    x = 9,748,289.44/3,557.47
  6. Step 6: Final answer
    x = 2,740.23

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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.