Home / 1,457.60-2,189.63-1,263.20

Finding the Fourth Proportional to 1,457.60, 2,189.63 and 1,263.20

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Solution

The fourth proportional to 1,457.60, 2,189.63 and 1,263.20 is: 1,897.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.60 : 2,189.63 = 1,263.20 : x
  2. Step 2: Convert to fraction form
    1,457.60/2,189.63 = 1,263.20/x
  3. Step 3: Cross multiply
    1,457.60x = 2,189.63 × 1,263.20
  4. Step 4: Simplify right side
    1,457.60x = 2,765,932.83
  5. Step 5: Solve for x
    x = 2,765,932.83/1,457.60
  6. Step 6: Final answer
    x = 1,897.60

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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.