Home / 5,145.75-7,718.65-1,250.16

Finding the Fourth Proportional to 5,145.75, 7,718.65 and 1,250.16

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Solution

The fourth proportional to 5,145.75, 7,718.65 and 1,250.16 is: 1,875.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.75 : 7,718.65 = 1,250.16 : x
  2. Step 2: Convert to fraction form
    5,145.75/7,718.65 = 1,250.16/x
  3. Step 3: Cross multiply
    5,145.75x = 7,718.65 × 1,250.16
  4. Step 4: Simplify right side
    5,145.75x = 9,649,547.48
  5. Step 5: Solve for x
    x = 9,649,547.48/5,145.75
  6. Step 6: Final answer
    x = 1,875.25

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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.