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Finding the Fourth Proportional to 7,897.63, 10,898.40 and 4,312.30

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Solution

The fourth proportional to 7,897.63, 10,898.40 and 4,312.30 is: 5,950.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,897.63 : 10,898.40 = 4,312.30 : x
  2. Step 2: Convert to fraction form
    7,897.63/10,898.40 = 4,312.30/x
  3. Step 3: Cross multiply
    7,897.63x = 10,898.40 × 4,312.30
  4. Step 4: Simplify right side
    7,897.63x = 46,997,170.32
  5. Step 5: Solve for x
    x = 46,997,170.32/7,897.63
  6. Step 6: Final answer
    x = 5,950.79

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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.