Home / 1,485.06-2,048.73-917.70

Finding the Fourth Proportional to 1,485.06, 2,048.73 and 917.70

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Solution

The fourth proportional to 1,485.06, 2,048.73 and 917.70 is: 1,266.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.06 : 2,048.73 = 917.70 : x
  2. Step 2: Convert to fraction form
    1,485.06/2,048.73 = 917.70/x
  3. Step 3: Cross multiply
    1,485.06x = 2,048.73 × 917.70
  4. Step 4: Simplify right side
    1,485.06x = 1,880,119.52
  5. Step 5: Solve for x
    x = 1,880,119.52/1,485.06
  6. Step 6: Final answer
    x = 1,266.02

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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.