Home / 4,750.48-7,125.72-1,287.64

Finding the Fourth Proportional to 4,750.48, 7,125.72 and 1,287.64

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Solution

The fourth proportional to 4,750.48, 7,125.72 and 1,287.64 is: 1,931.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,750.48 : 7,125.72 = 1,287.64 : x
  2. Step 2: Convert to fraction form
    4,750.48/7,125.72 = 1,287.64/x
  3. Step 3: Cross multiply
    4,750.48x = 7,125.72 × 1,287.64
  4. Step 4: Simplify right side
    4,750.48x = 9,175,362.10
  5. Step 5: Solve for x
    x = 9,175,362.10/4,750.48
  6. Step 6: Final answer
    x = 1,931.46

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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.