Home / 7,880.49-10,880.56-4,897.66

Finding the Fourth Proportional to 7,880.49, 10,880.56 and 4,897.66

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Solution

The fourth proportional to 7,880.49, 10,880.56 and 4,897.66 is: 6,762.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.49 : 10,880.56 = 4,897.66 : x
  2. Step 2: Convert to fraction form
    7,880.49/10,880.56 = 4,897.66/x
  3. Step 3: Cross multiply
    7,880.49x = 10,880.56 × 4,897.66
  4. Step 4: Simplify right side
    7,880.49x = 53,289,283.49
  5. Step 5: Solve for x
    x = 53,289,283.49/7,880.49
  6. Step 6: Final answer
    x = 6,762.18

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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.