Home / 4,751.40-7,127.10-2,880.30

Finding the Fourth Proportional to 4,751.40, 7,127.10 and 2,880.30

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Solution

The fourth proportional to 4,751.40, 7,127.10 and 2,880.30 is: 4,320.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,751.40 : 7,127.10 = 2,880.30 : x
  2. Step 2: Convert to fraction form
    4,751.40/7,127.10 = 2,880.30/x
  3. Step 3: Cross multiply
    4,751.40x = 7,127.10 × 2,880.30
  4. Step 4: Simplify right side
    4,751.40x = 20,528,186.13
  5. Step 5: Solve for x
    x = 20,528,186.13/4,751.40
  6. Step 6: Final answer
    x = 4,320.45

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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.