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Finding the Fourth Proportional to 7,885.30, 10,848.18 and 7,666.60

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Solution

The fourth proportional to 7,885.30, 10,848.18 and 7,666.60 is: 10,547.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885.30 : 10,848.18 = 7,666.60 : x
  2. Step 2: Convert to fraction form
    7,885.30/10,848.18 = 7,666.60/x
  3. Step 3: Cross multiply
    7,885.30x = 10,848.18 × 7,666.60
  4. Step 4: Simplify right side
    7,885.30x = 83,168,656.79
  5. Step 5: Solve for x
    x = 83,168,656.79/7,885.30
  6. Step 6: Final answer
    x = 10,547.30

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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.