Home / 1,485.28-2,048.35-953.55

Finding the Fourth Proportional to 1,485.28, 2,048.35 and 953.55

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Solution

The fourth proportional to 1,485.28, 2,048.35 and 953.55 is: 1,315.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.28 : 2,048.35 = 953.55 : x
  2. Step 2: Convert to fraction form
    1,485.28/2,048.35 = 953.55/x
  3. Step 3: Cross multiply
    1,485.28x = 2,048.35 × 953.55
  4. Step 4: Simplify right side
    1,485.28x = 1,953,204.14
  5. Step 5: Solve for x
    x = 1,953,204.14/1,485.28
  6. Step 6: Final answer
    x = 1,315.04

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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.