Home / 1,666.24-2,487.08-1,420.96

Finding the Fourth Proportional to 1,666.24, 2,487.08 and 1,420.96

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Solution

The fourth proportional to 1,666.24, 2,487.08 and 1,420.96 is: 2,120.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,666.24 : 2,487.08 = 1,420.96 : x
  2. Step 2: Convert to fraction form
    1,666.24/2,487.08 = 1,420.96/x
  3. Step 3: Cross multiply
    1,666.24x = 2,487.08 × 1,420.96
  4. Step 4: Simplify right side
    1,666.24x = 3,534,041.20
  5. Step 5: Solve for x
    x = 3,534,041.20/1,666.24
  6. Step 6: Final answer
    x = 2,120.97

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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.