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Finding the Fourth Proportional to 5,266.48, 7,899.72 and 1,570

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Solution

The fourth proportional to 5,266.48, 7,899.72 and 1,570 is: 2,355.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,266.48 : 7,899.72 = 1,570 : x
  2. Step 2: Convert to fraction form
    5,266.48/7,899.72 = 1,570/x
  3. Step 3: Cross multiply
    5,266.48x = 7,899.72 × 1,570
  4. Step 4: Simplify right side
    5,266.48x = 12,402,560.40
  5. Step 5: Solve for x
    x = 12,402,560.40/5,266.48
  6. Step 6: Final answer
    x = 2,355.00

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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.