Home / 1,460.06-2,189.61-485.90

Finding the Fourth Proportional to 1,460.06, 2,189.61 and 485.90

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Solution

The fourth proportional to 1,460.06, 2,189.61 and 485.90 is: 728.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.06 : 2,189.61 = 485.90 : x
  2. Step 2: Convert to fraction form
    1,460.06/2,189.61 = 485.90/x
  3. Step 3: Cross multiply
    1,460.06x = 2,189.61 × 485.90
  4. Step 4: Simplify right side
    1,460.06x = 1,063,931.50
  5. Step 5: Solve for x
    x = 1,063,931.50/1,460.06
  6. Step 6: Final answer
    x = 728.69

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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.